You are presented with the question "What can form when water vapor cools?" and the following answer choices: 
- Chimneys
 - Evaporation
 - chemicals
 - streams
 - Wind
 - Organic nutrients
 - Clouds
 - mildew

Now knowing that water vapor cooling causes that water vapor to condense and clouds form by the condensation of water vapor, choose the best answer.


 

       Clouds  