This is a hard one and I can see why you decided to post it here. B is most definitely wrong but the other three are all neck and neck. There are both even pros and cons of A and C but I think it would be more reasonable to adopt a general routine. So I think the answer would be C.
Answer:
a. A i think so its A part and maybe also b part
Answer:
Dramatic Irony
Explanation:
Dramatic irony is demonstrated as the literary devices in which the audiences' are aware of a specific situation, cause of conflict, or its resolution but the characters are not. It helps the author in developing tension among the readers and building suspense as the readers' are uncertain about the characters' next move. Similarly, in the given example audience knowing about the 'masked young man being Romeo, a Montague' and characters not having an idea of this exemplifies 'dramatic irony.'