Firstly, Conditional past real mood is a statement where one explains what they would have done if some event had occurred, or what could happen, in other words, a theoretical action. The tense will be dependent on the action. Therefore, the only one that fits is C "If I had homework, I would have studied at the library." I properly states their theoretical scenario in which they had homework.
Answer: C. 1 and 3: Those in the upper classes only value surface appearances and Judy values only her own desires because she is immature and self-absorbed.
Explanation: In the given excerpt from F. Scott Fitzgerald's "Winter Dreams" we can see that Judy is very sad because she thinks she can not be happy despite her beauty, also she asks Dexter to marry her even when she thinks he is not interested in her. This details express the idea that those in the upper classes only value surface appearances and also that udy values only her own desires because she is immature and self-absorbed.
The nouns are president, class, and class officials. hope this helps !
The answer would be a Semicolon i believe.