The correct answer is C. "Life is wonderful. Life is painful."
Parallelism uses words or phrases with a similar structure. In this phrase using the words "life is" in both sentences creates symmetry and structure. Where parts of the sentence are similar in construction. In these cases it can be a word, a phrase, or an entire sentence repeated.
The best and the most correct answer among the choices provided by the question is the first choice. The denotation for proponent is "supporters" I hope my answer has come to your help. God bless and have a nice day ahead!
