Which would lead to the greatest reduction of dissolved oxygen in a lake? o
A. decreased number of fish in the lake
B. decreased number of plants surrounding the lake
C. increased number of fish in the lake
D. increased nutrients and algal blooms

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.

When plants die fungi breaks them down