You are presented with the question "Water vapor doing what causes clouds or rain?" and the following answer choices: 
- flooding
 - decreasing
 - dissolving
 - moves
 - warming
 - boiling
 - heat
 - cooling

Now knowing that water vapor cooling causes that water vapor to condense and cooler air can hold less water vapor than warmer air and condenses as clouds or in the form of rain, choose the best answer.


 

        cooling 