Choice C is the best answer. The previous question asks about Lymie's impression of the party of four who enter the restaurant, with the correct answer being that he finds them noisy and distracting. This is supported in (lines 55-59,"cocktail...back"): "But it was the women's voices, the terrible not quite sober pitch of the women's voices, which caused Lymie to skim over two whole pages without knowing what was on them."
Choices A, B, and D are incorrect because the lines cited do not support the answer to the previous question about Lymie's impression of the party of four who enter the restaurant. Rather than showing that Lymie finds the group of strangers noisy and distracting, the lines simply describe how two of the four people look (choices A and B) and indicate what Lymie does when his father joins him in the restaurant (choice D).