You are presented with the question "How do we determine the probability of receiving more water than a body can hold?" and the following answer choices: 
- evaporation
 - climate
 - The past
 - watershed
 - Dilution
 - energy usage
 - Temperature
 - salinity

Now knowing that when a body of water receives more water than it can hold , a flood occurs and flood probability is based on past floods, choose the best answer.


 

   The past      