详解
Choice D is the best answer. In (lines 10-13,"Many... peers") the authors clearly state that some people believe gift-giving can help a relationship because it "offers a powerful means to build stronger bonds with one's closest peers."
Choice A is incorrect because even though the authors state that some shoppers make their choices based on "egocentrism," (line 33, "their... egocentrism") there is no evidence in the passage that people view shopping as a form of selfexpression. Choice B is incorrect because the passage implies that shopping is an expensive habit. Choice C is incorrect because the passage states that most people have purchased and received gifts, but it never implies that people are required to reciprocate the gift-giving process.