You are presented with the question "What evaporates from the skin?" and the following answer choices: 
- energy
 - Water
 - solutes
 - h2o
 - pus
 - sweat
 - rain
 - phlegm

Now knowing that evaporation of sweat uses energy, and the energy comes from body heat and when sweat comes in contact with the skin it is cooled as the sweat evaporates, choose the best answer.


 

      sweat   