Choice D is the best answer. The previous question asks which statement about the narrator's father would the narrator most likely agree with. The answer, that his father wouldn't have approved of Sempere's gift to the narrator, is best supported in the tenth paragraph: "That afternoon I took my new friend home, hidden under my clothes so that my father wouldn't see it." It can be inferred from this sentence that the narrator is aware of his father's likely disapproval of the gift (the "new friend").
Choices A, B, and C are incorrect because the cited lines don't support the answer to the previous question. Instead, they show the father giving his own gift to the narrator (choice A) and illustrate how the narrator was treated when in Sempere's bookshop (choices B and C).