Based on this excerpt from f. scott fitzgerald's "winter dreams," what is the meaning of the word priggish? he stayed late at the dance. he sat for an hour with irene scheerer and talked about books and about music. he knew very little about either. but he was beginning to be master of his own time now, and he had a rather priggish notion that he—the young and already fabulously successful dexter green—should know more about such things.
benign
successful
obnoxious
definitive
pessimistic

Based on thу excerpt from F. Scott Fitzgerald's "Winter Dreams," represented above, I think that the third option from the attached scale clearly shows the meaning of the word priggish. I am pretty sure that obnoxious is the most suitable word to explain the meaning of the whole phrase, but if you are not so sure, check it in dictionary. Do hope it will help you in your homework.

Delegates: representatives who cast votes at a political party's national convention. binding: if a primary or caucus is “binding” that means the delegates won in that contest are legally bound to vote for a particular candidate at the parties national convention.a primary is a preliminary election used to determine a party's nominee for a specific office. the winner of the party's caucus, or primary, wins the party nomination for that state. then the delegates meet at their party's national party convention, which is a formal gathering of all party delegates from all states.