You are presented with the question "How are clouds formed?" and the following answer choices: 
- dry and hot
 - heating liquids
 - Physical weathering
 - solid, liquid, gas
 - dormant state
 - colder and wetter
 - evaporation
 - Cooling vapors

Now knowing that water vapor cooling causes that water vapor to condense and when water vapor cools, it condenses to form clouds, choose the best answer.


 

        Cooling vapors 