Explanation
Correct answer: A.
Choice A is the best answer because it most accurately describes the main purpose of the text, which is to show how Polly reacted to some of Fanny’s other friends. The text describes Polly as being frightened of Fanny’s friends because they seemed “much older and wiser” to her and elaborates that they “talked about things of which” Polly was unfamiliar, uninterested, and shocked. Thus, the main purpose of the text is to describe Polly’s impressions of Fanny’s other friends.
Why the other choices are wrong
Choice B
Choice B is incorrect because the text does not provide any of the topics Polly discussed with Fanny’s friends, stating only that Polly found the topics unfamiliar, uninteresting, and shocking.
Choice C
Choice C is incorrect because the text says nothing about how Fanny and her other friends first met.
Choice D
Choice D is incorrect because the focus of the text is on Polly’s feelings about Fanny’s other friends, not on the other friends’ feelings about Polly.