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Sajjad1994 Q4 why answer A is wrong??

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Official Explanation

4. The author includes the statistic “97 percent of the U.S. population lives under a night sky at least as bright as it was on a half-moon night in ancient times” to primarily emphasize which of the following points?

Difficulty Level: 700

Explanation

This question asks you about the use of a specifc statistic. To answer this question correctly, keep in mind the author’s purpose for writing the passage, which you’ve already considered in the third question. Find the choice that links the statistic to the author’s purpose of comparing nighttime now and nighttime in centuries past.

Eliminate Choice (C) because the author compares time periods, not modern countries. Because the passage doesn’t indicate that the moon is brighter than electric lights, you can eliminate Choice (D).

Although the 97 percent statistic may lead you to conclude that light pollution is a big problem, that’s not the author’s reason for using the statistic, so eliminate Choice (E).

Choice (A) is a little more plausible, but Choice (B) is better because the author is more concerned with showing how night skies are different now than with showing that the modern well-lit sky is a luxury.

Answer: B
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