Probably C or D but I recommend you try process elimination and just do the answer that BEST matches it
Answer: Symbolism takes something that is usually concrete and associates or affixes it to something else in order to give it a new and more significant meaning.
I've always been taught that revising involves checking for spelling, punctuation, and grammar. Basically any kind of improvements. Is this one of those questions where you check all that apply? Revising also includes making sure you have stayed on topic and gives you the chance to remove things that may not really apply or add other things that may have been left out. It's where the writer truly polishes everything up.
I hope this helps.