the location of the nearest ocean the average annual rainfall the location of the nearest mountain the average winter temperature
I gave my students this multiple choice question: Which factor has the greatest effect on a community's stores of freshwater?

Only one answer is correct among these 4 choices:
- the location of the nearest ocean
- the average annual rainfall
- the location of the nearest mountain
- the average winter temperature

Could you tell me which one is correct?

the average annual rainfall