I think the answer is a because of how a is answers
Answer:
The second sentence is correct
The best villain is probably Thanos. His motives are toward universal peace he just went about it wrong. World peace if sometihng that we want to attain. Studies have shown that their is enough food in the world to feed every one. That there is enough for every one. So killing half the population is not the answer. Thanos didn't see another way. And he was tired of seeing the universe deteriorate. So i think he is the best villain.
The suitors would plot to kill him
"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.