A. True, stronger wind can move alot, including cars....
Vegetation catches precipitation on its leaves, slowing it down or holding it for a while. This gives the ground more time to absorb the water, so there's less runoff.
The disease has infected a few people, spread out over a large distance because Cholera can't suddenly spread, it infects few people and then spreads rapidly.
I think it's B but I'm not to sure. hope that at least kinda helps.