AP English Language study guide · Chapter 20
Decide what each source can support
CHAPTER 19
Decide what each source can support
Do not treat six sources as six paragraphs. Decide what each source can actually support and mark where its evidence stops. A source belongs in the essay when it serves the writer's line of reasoning, whether it supplies context, data, or a complication that changes the claim.
Read the prompt before reading the packet
The synthesis prompt names the decision you are being asked to take a position on. Read it carefully before reading any source, and identify the actor, the action, the scope, and any qualifier the prompt uses. Reading the sources first, before knowing exactly what decision they need to inform, wastes the first read.
Give every source a tentative use
As you read, mark one likely use for each source, but do not treat that label as permanent. A source may supply context in one paragraph, evidence in another, or become a complication once your claim changes. The useful question is not “What type of source is this?” but “What specific claim could this source support, limit, or complicate?”
Separate context from evidence
Some sources exist mainly to establish background, why this issue exists, what the current policy is, how the debate arose. Others supply the specific evidence an essay can cite to support a claim. Confusing a context source for an evidence source, or the reverse, leads to citing the wrong kind of material for the job a paragraph needs done.
Find the source that limits the easy claim
In a well-built packet, at least one source complicates the position that looks easiest to take. Identifying that source early lets you build a more sophisticated essay from the start, rather than discovering the complication late and having to awkwardly retrofit it into an already-drafted argument.
Write the strongest claim each source can support
For each source, practice stating the strongest specific claim it could support in an essay, in one sentence. This is different from summarizing the source's content; it is deciding what argumentative job the source is actually suited to perform.
Notice when two sources do different jobs
Two sources can address the same general topic while doing entirely different jobs, one supplying a measurable trend, the other a stakeholder's lived experience of that same trend. Treating them as interchangeable, rather than recognizing their distinct contributions, flattens an essay's use of the packet.
Mark the visual before you forget it
A visual or data source requires its own careful reading: the variable, the units, the population, and the time period. Mark these details as you read the visual, since returning to reread a chart under time pressure costs more than reading it carefully once.
A source does not have to appear in the essay
You are not required to use all six sources equally, and a source that does not fit your specific argument does not need to be forced in. Using at least three sources well, each doing a specific job for your claim, serves the essay better than citing every source thinly.
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EXAM DIAMOND Give each source a tentative job, then test it against a claim. The same source can do different work in different lines of reasoning. |
SYNTHESIS PACKET: LIBRARY LATE FEES
The following six sources accompany this prompt. Read the prompt first, then read each source and assign it a role before continuing to the chapter's questions.
Prompt: Public libraries across the country are reconsidering whether to charge late fees for overdue materials. Write an essay that develops a position on whether a public library system should eliminate late fees for overdue materials.
Source A
Practice-source note: Sources A–F are simulated materials created for this book. Names, quotations, organizations, and numerical results are fictional unless a source is explicitly identified as an authentic published source.
Public libraries have charged late fees for overdue materials for well over a century, originally as a practical incentive to encourage timely returns so that other patrons could access popular titles. In recent years, a growing number of library systems have begun eliminating these fees entirely, citing concerns that fines disproportionately burden low-income patrons and discourage library use among the families who might benefit from it most. Supporters of eliminating fees argue that a library's core mission, providing open access to information, is undermined when patrons stay away out of fear of accumulating debt they cannot pay.
Source A: Original background summary
Source B
| Library System | Late Fees Eliminated | Change in Circulation (Year 1) | Change in Overdue Returns (Year 1) |
|---|---|---|---|
| Eastmere County Library | Yes, 2019 | +12% | -3% |
| Northgate Public Library | Yes, 2019 | +8% | -1% |
| Havenwood County Library | No (fees retained) | +1% | 0% |
| Delmar City Library | Yes, 2021 | +15% | -4% |
Source B: Simulated circulation data for instructional use.
Source C
“I stopped bringing my kids to the library after we racked up almost forty dollars in fines two summers ago. It wasn't that we didn't care about returning the books on time, it was that between work and three kids, some weeks it just didn't happen. When I heard they dropped the late fees, we started going back. My youngest checks out ten books at a time now.”
Source C: Statement from a parent at a city council meeting on library policy (original composite testimony for instructional use)
Source D
Eliminating late fees removes a library's only meaningful mechanism for encouraging patrons to return high-demand materials promptly. Library administrators in several systems that eliminated fees report a modest increase in the average time items remain checked out, which can reduce the availability of popular new releases and frequently requested titles. Fee revenue, while a small share of most library budgets, has also historically funded specific programs, and its loss requires either budget reallocation or reduced services elsewhere.
Source D: Original summary of administrative concerns
Source E
A professional library-policy advisory group recommends that libraries considering fine-free policies pair them with clear rules for long-overdue or lost materials, such as temporarily suspending new checkouts after a defined overdue period until the item is returned or replaced.
Source E: Simulated professional-guidance summary for instructional use.
Source F
Some library systems have adopted a middle approach: eliminating fines for children's and young adult materials while retaining modest fees for adult materials, or replacing daily fines with a flat, one-time fee after a grace period. Early data from these hybrid approaches suggests they capture some of the access benefits of full elimination while preserving a modest financial incentive for prompt returns on adult collections.
Source F: Original summary of alternative policy approaches
CONSTRUCTED-RESPONSE DRILL
Drill: Give each source a tentative use
For Sources A through F, write one plausible primary use for each source. Then choose one source and name a second legitimate use it could serve in a different argument.
Model reasoning: Source A: primary use, context establishing the history and current debate. Source B: primary use, quantitative evidence, a measurable circulation trend across systems; a second use could be a complication if the essay needed to note that one retained-fee system still saw circulation rise slightly. Source C: primary use, a stakeholder's lived experience of the policy. Source D: primary use, a complication limiting the easy case for elimination; a second use could be context for explaining why some systems pair elimination with new rules. Source E: primary use, professional guidance shaping how a decision should be implemented. Source F: primary use, an alternative approach between full elimination and full retention.
CHAPTER 19 PRACTICE
Answer all eight questions using the synthesis packet above before checking explanations.
Question 1
- AA. It supplies the packet's strongest quantitative evidence
- BB. It represents a stakeholder's personal experience
- CC. It establishes context: the history of late fees and why the current debate exists
- DD. It describes an alternative policy approach
Question 2
- AA. Circulation increased at every system that eliminated late fees during the measured year, while the one system that retained fees saw minimal change
- BB. Every library in the country has now eliminated late fees
- CC. Library staff prefer fine-free policies over fee-based policies
- DD. Fee elimination has no effect on library budgets
Question 3
- AA. Both sources provide identical statistical evidence
- BB. Source C is institutional policy guidance, while Source B is a stakeholder account
- CC. Source C and Source B serve the identical role of establishing background context
- DD. Source C supplies a stakeholder's specific personal experience, while Source B supplies measurable, comparative data across systems
Question 4
- AA. Source A, which provides historical background
- BB. Source D, which raises concerns about item availability and lost fee revenue
- CC. Source C, which shares a parent's positive experience
- DD. Source B, which shows circulation increases
Question 5
- AA. The library system names are fictional
- BB. The percentages are not clearly labeled
- CC. The data reflects only the first full year after each policy change, so longer-term trends are not established by this source alone
- DD. The data does not specify a population
Question 6
- AA. A hybrid policy, retaining fees for adult materials while eliminating them for children's materials, may capture some access benefits while preserving an incentive for prompt returns
- BB. Every library should adopt a fully fine-free policy immediately
- CC. Late fees should never be eliminated under any circumstances
- DD. Hybrid policies have definitively proven superior to all other approaches
Question 7
- AA. It would never be reasonable to skip any source under any circumstances
- BB. If the student's specific argument does not need to address the availability and revenue concerns Source D raises, using the other five sources well is preferable to forcing in a source that does not fit the argument's specific needs
- CC. It would only be reasonable if Source D contained a factual error
- DD. It would only be reasonable if the student used all five remaining sources equally
Question 8
- AA. Both sources play the identical role of complicating the case for fee elimination
- BB. Source E is a stakeholder perspective, while Source D is context
- CC. Source E and Source D provide identical quantitative data
- DD. Source E offers institutional policy guidance about how to implement a decision responsibly, while Source D raises specific operational concerns that complicate the case for elimination
ANSWERS AND EXPLANATIONS
Show the answers and explanations
1. Correct answer: C
A: Source A contains no data or measurable trend; that role belongs to Source B, which presents circulation figures.
B: Source A does not present an individual's lived experience; that role belongs to Source C, the parent's testimony.
C (correct): Source A does not supply measurable evidence or a stakeholder perspective; it establishes background on the practice's origin and the reasoning behind the current reconsideration, which is a context role.
D: Source A does not describe a middle-ground policy option; that role belongs to Source F.
2. Correct answer: A
A (correct): This claim is directly supported by the specific circulation percentages shown for each of the four systems, three of which eliminated fees and saw circulation increases, while the one retaining fees saw almost no change.
B: The data covers only four specific systems and does not support a claim about every library nationwide.
C: The data concerns circulation and return figures, not a survey of staff preferences, so it cannot support this specific claim.
D: The data concerns circulation, not budget impact; a budget claim would need to draw on Source D instead.
3. Correct answer: D
A: Source C contains no statistics; it is a personal testimony, distinct from Source B's quantitative data.
B: This reverses the actual roles; Source C is the stakeholder account, and neither source is institutional policy guidance, which is Source E's role.
C: Neither source primarily establishes background context; that is Source A's role, while B and C serve evidence and stakeholder-perspective roles respectively.
D (correct): These two sources do different jobs even though both concern the same general topic: Source B provides quantifiable, comparative evidence, while Source C provides a specific individual's lived account of the policy's effect.
4. Correct answer: B
A: Source A establishes context but does not raise a specific complication or drawback to the elimination argument.
B (correct): Source D specifically identifies drawbacks, including longer checkout times for popular items and the need to address lost fee revenue, directly complicating an easy, drawback-free case for elimination.
C: Source C supports rather than complicates the case for elimination, describing a positive outcome from the policy change.
D: Source B's data generally supports the case for elimination rather than complicating it with a specific drawback.
5. Correct answer: C
A: Nothing in the source indicates the names are fictional; the caution needed concerns the limited time period, not the authenticity of the names.
B: The percentages are clearly labeled with specific column headers indicating circulation change and overdue return change; the caution needed concerns time period, not labeling clarity.
C (correct): Careful reading of a data source requires attention to the time period covered; this table covers only the first year, so claims about long-term or permanent effects would exceed what this specific data establishes.
D: The population, each named library system's circulation, is reasonably clear from the table; the caution needed specifically concerns the one-year time window.
6. Correct answer: A
A (correct): This claim accurately reflects the specific, qualified content of Source F, which describes a middle-ground approach and its early, suggestive rather than definitive results.
B: This claim is not what Source F supports; Source F specifically describes a middle, hybrid approach rather than advocating full elimination.
C: This claim contradicts what Source F actually describes, a middle approach that does eliminate some fees while retaining others.
D: Source F describes early, suggestive data, not definitive proof; this claim overstates what the source actually supports.
7. Correct answer: B
A: This contradicts the chapter's explicit guidance that using sources well matters more than using every source equally.
B (correct): This chapter's guidance is clear that not every source needs to be used, and a source that does not serve the specific argument being built does not need to be forced in, provided the essay still uses enough sources well.
C: The reasonableness of skipping a source depends on fit with the specific argument, not on whether the source contains an error.
D: The chapter's guidance emphasizes using at least three sources well, not necessarily using every remaining source equally.
8. Correct answer: D
A: Source E does not primarily complicate the case; it offers guidance for implementation, assuming a library may choose to move toward a fine-free model.
B: Neither description is accurate; Source E is institutional policy guidance, and Source D is a complication, not context, which is Source A's role.
C: Neither source provides quantitative data; that role belongs specifically to Source B.
D (correct): Source E's role is prescriptive and institutional, offering guidance on responsible implementation, while Source D's role is to complicate the easy case by raising specific operational drawbacks, a meaningfully different job.