"I just do not understand it," Jack says to his friend, Christina, one day. "Why did I become a successful, well-adjusted man, despite growing up in such a disadvantaged, unstable family?" Christina replies, "Sometimes is a little bit stronger than , I suppose."

Ibelieve the answer is relative humidity  because it makes more sense that way. solar flares usually occur in space it doesn't affect the earth, well it could but it wont make a significant damage.  latitude is land it doesnt do anything. prevailing winds, i dont know the correct meaning for this but i doubt that affects the land so it has to be relative humidity.