Interpetation is something a reader does in response to a text. Hope this helps!
Http://www.enotes.com/homework-help/dicuss-how-theme-money-cannot-buy-happiness-great-173429
Great notes that elaborate on your prompt with The Great Gatsby.
I think the answer would be C, because an implicit theme is one that's hidden in the story and you kind of have to dig into the piece and look for it.
I am pretty sure it's B. speech
D.its a flashback...foreshadowing is knowing something in the future