C. because it is the only one that makes sense
Rhetorical questions add a level of cheesiness to the paper and unless you are a very good writer, and I mean college professor level, then you will most likely fail at any attempt. Also writing research papers your suppose to be telling the reader what they don't know instead of asking them what is already do know.
Answer:
Mainly words with positive and negative connotations
Explanation:
This way, the words will be balanced.
