The Answer should be Imperative.
The reason is because a simile has like or as in the sentence and a metaphor is referring to an object in the sentence and a rhetorical question is asking a question so those are wrong.
Your answer is D. all of the above.
D, B, A, C is the order I would put it in
It means that even it everyone is doing something wrong, it is not right. It is referring to peer pressure, don't do something just because everyone else it doing it.