THe answer is A. Themselves. A reflexive pronoun indicates that the person who is realizing the action of the verb is also the recipient of the action.
You didn't provide the sentences, however, they probably contain things like vivid descriptions of things or their smells or how they feel when you touch them. If they are extremely realistic, then they are really vivid and this should be your correct sentence.
I think it’s c
Because it is c cccccc
Annoying
Beautiful
Carefully