Symbolism is a literary device, that some authors use in order to have a deeper meaning for something, you use symbolism in order to represent and idea. Authors may use this to hint the reader to something, rather than just making it easy or plain to see. It helps draw the readers in. Ex: A red rose, the red stands for love and loyalty, or a purple tulip, the purple represents true love and loyalty.
a word or expression used in a figurative sense, which is based on the comparison of an unnamed object or phenomenon with any other based on their common feature. Malapropism is an abusive use ridiculed by an English playwright. Symbolism is the largest trend in art, characterized by experimentation, the desire for innovation, the use of symbolism, understatement, hints ... (Perhaps I did not understand the question)
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."
