The answer is A because a historical event already happened
Mark Twain develops (C) characterization through motivation, words, traits, and reactions to others.
Answer:
One of the most memorable examples of irony in The Great Gatsby is when Gatsby sits out all night making sure that "Tom doesn't hurt [Daisy]" after the infamous yellow car incident. While he is outside lovingly and gallantly watching over her, Daisy is inside making up with Tom.
Explanation:
C (“when he helped” is the phrase) and it is a dependent clause because it does not make sense on its own