I don't know what passage you're talking about, but I think that A would be a better choice. To me, B seems a little too specific to be a main idea. However, if the passage never discusses the kindness of others then I think that B is probably correct.
Answer:
Can u send the rules so I can answer
Answer:
Self-disclosure could negatively put you in positions where people are gossiping about you. Self-disclosure could positively put in a position where people are friendly to you and want to learn more about you.
Please provide a paragraph or some kind of context for this :)