SAT Reading & Writing · Information and Ideas
Command of Evidence (textual) practice questions
Each free question on this page comes with its answer and a full explanation.
- Question 1A team analyzing an iridescent glass fragment recovered from a first-century Roman burial proposed that its color resulted from…
- Question 2A curator claims that a museum's newly acquired painting was created by a specific well-known Renaissance workshop, based…
- Question 26A popular claim holds that the QWERTY keyboard layout was deliberately designed to slow typists down, preventing the metal…
- Question 28A theater historian claims that a controversial ending added to a classic play during a famous twentieth-century production…
- Question 29A stream ecologist claims that the isotopic signature of marine-derived nitrogen found in forest soils near salmon-spawning…
- Question 52Cleaner wrasse fish sometimes "cheat" by biting a client fish's protective mucus instead of removing parasites as expected, but…
- Question 53A biographer claims that a famous novelist's reclusive later years were driven entirely by a fear of public criticism following…
- Question 54Female superb fairy-wrens sing a distinctive call while incubating their eggs, and their nestlings later incorporate an element…
- Question 75Some tropical bat species bite the structural veins of large leaves so precisely that the leaf collapses into a tent-like shape,…
- Question 76When a snapping shrimp closes its specialized claw, it does so fast enough to form a rapidly collapsing cavitation bubble in the…
- Question 77Certain sacoglossan sea slugs ingest algae and retain the algae's chloroplasts within their own tissue for weeks or months, and…
- Question 106Freshwater stickleback fish in many separate lakes have independently evolved reduced pelvic armor, and researchers have traced…
- Question 107A population of Italian wall lizards introduced to a new island developed larger heads and new internal gut structures over…
- Question 121Researchers studying mosquito populations living within the London Underground transit system found that these populations show…
- Question 122The ability to digest lactose into adulthood is associated with different genetic regulatory variants in European populations…
- Question 155The classic story of the peppered moth describes dark-colored moths becoming more common in polluted regions of Britain, where…
- Question 164In Mozambique's Gorongosa National Park, intense ivory poaching during a period of civil conflict was followed by a sharp…
- Question 165Killifish populations living in several heavily polluted American estuaries independently evolved tolerance to toxic industrial…
- Question 183Galápagos flightless cormorants have small, reduced wings along with genetic changes in pathways related to skeletal…
- Question 184Bacterial resistance to a particular antibiotic often declines after the antibiotic is used less frequently, because resistance…
- Question 202In a decades-long laboratory evolution experiment, one population of E. coli bacteria evolved the ability to use citrate as a…
- Question 203A local bakery owner claims that switching to a new flour supplier improved the taste of their bread. Which finding would most…
- Question 236Many snowshoe hares molt to white fur for winter camouflage largely in response to seasonal changes in daylight length, instead…
- Question 255A genetic variant called CCR5-Δ32, which provides resistance to some strains of HIV, is relatively common in parts of Europe. A…
- Question 273Populations of Mexican cavefish living in separate, isolated caves have independently evolved reduced eyes and pigmentation. A…
- Question 288Parasitic dodder plant seedlings have been observed growing directionally toward nearby host plants before making any physical…