john doe and jane doe want to have children and are thinking about how their children’s hands might look. what would their children look like if they’re both heterozygous for straight pinky and hitchhikers thumb?

The answer to this is b

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.