SAT Reading & Writing · Boundaries

The city's oldest bookstore ______ a cramped, narrow space lined floor to ceiling with shelves ______ has occupied the same corner for…

The city's oldest bookstore ______ a cramped, narrow space lined floor to ceiling with shelves ______ has occupied the same corner for over a century.

Which choice completes the text so that it conforms to the conventions of Standard English?

Answer and explanation

Answer: A: , ... ,

"A cramped, narrow space lined floor to ceiling with shelves" is a supplement describing the bookstore, inserted between the subject and the main verb "has occupied." A mid-sentence supplement needs commas on both sides. A supplies both; the others leave the boundary incomplete or entirely absent.

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