Answer the following question given this paragraph: 

Condensation changes water vapor to liquid water. As air rises higher into the atmosphere, it cools. Cool air can hold less water vapor than warm air. So some of the water vapor condenses into water droplets. Water droplets may form clouds.


Q: What changes water vapor to liquid water?

 Choices:

- fermentation

- global warming

- combustion

- condensation

A:
condensation
