I think it’s B but I’m really not sure
The following are the answers to your questions and please if you don't mind, don't post to many questions in just one posting.
#1 D P'u Yi realizes that the splendor is reserved for his position and not for him
#2 <span>B "To show how they loved me and cared for me, the high consorts also sent a responsible eunuch to report on how I had 'consumed viands.' This too was a formality."</span>
Question:
What is the antecedent of the pronoun those?
Sentence: Those are books that need to be returned to the library
Answer:
<u><em>Books</em></u>
Pronouns are used to replace nouns with more general terms that don't describe a specific person or place. The antecedent of a pronoun is the word that the pronoun replaces.
In the case of this sentence, the pronoun <em>those </em>replaces the word <em>books</em>, therefore the antecedent of the pronoun <em>those </em>is <em>books</em>.