Answer:
Aristotle's Poetics seeks to address the different kinds of poetry, the structure of a good poem, and the division of a poem into its component parts. He defines poetry as a 'medium of imitation' that seeks to represent or duplicate life through character, emotion, or action
If you accept either C or D as the correct revision then you have to accept both of them. Hence the best way to treat the sentence is to ignore both of them.
B is not correct either. You can over punctuate.
That leaves A.
Sometimes the right answer to many things is to do nothing. My dad used to say "Don't fix what isn't broke."
A is the answer <<<<<
