A. Kozol reported that the New York City schools with the lowest student performance records were often dangerously unsanitary and in need of repair (151–152).

Correct! This sentence accurately sums up the main point of Kozol’s passage.

B. Kozol reported that some New York City schools had problems such as leaky roofs, mold, and unclean bathrooms (151–152).

Incorrect. This sentence relies on specific details of the passage without clearly stating the main point as the first option does—that the low-performing schools “were often dangerously unsanitary and in need of repair.”