In Act 1, Cassius is trying to persuade Brutus against Caesar. This would make him a betrayer. It shows that Cassius is against Caesar in all ways possible. Especially when he saved Caesar and he acted like a little sick girl. Cassius's persuasion eventually wins over Brutus and that's why the outcome of Julius Caesar, was what it was.
Welp, the kid appears to have pawned his work off on his friends, but who knows, if it's a multi-choice question I can't really help because you don't have the answers here.
