The best option for this question that which word is representing the subject is A) "it". The reason you can easily found but you have to understand it carefully and I hope my answer satisfied you:)
Answer:
Well, it depends on their opinions about each other.
Explanation:
If this happens, over time, they can move people around to their liking or your liking, you could make new friendships, and more.
So yes, I think they should do that.
Answer:
C (unsure)
Explanation:
The question looks like it is asking what the problem is with that sentence. The sentence "I'm going to tell you that..." seems extra. If you think this resembles what you define as throwaway writing, go for it.