I'm not the greatest at grammar, but I think the very first one is incorrect. It should just be a comma, then the second just a comma as well, but the last one is correct. (I have no idea, I am sorry if you get it wrong.)
Answer:
B. People will naturally come together when threatened by an enemy and will do whatever it takes to feel safe again
Explanation:
cause i got this answer right
If the underlined pronoun is who, then the answer is C) subject. If the underlined pronoun is you, then the answer is indirect object.
