You are presented with the question "What does water turn into when heat is added?" and the following answer choices: 
- Rain
 - energy
 - potash
 - h2o
 - Vapor
 - an ion
 - Ice
 - Energy.

Now knowing that the sun causes water to evaporate more quickly by adding heat and evaporation is the change of liquid water to a vapor, choose the best answer.


 

     Vapor    