The correct answer among all the other choices is a. formality. This is not something to consider when revising for clarity. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
"Has been waiting" should be your answer. a simple predicate is the verb or verb phrase in the sentence and it usually tells what the subject does.
Answer:
depends on what the essay is o-0
A. Your opinion about which side is right
