Fact 1: Evaporation of sweat uses energy, and the energy comes from body heat.

Fact 2: When sweat comes in contact with the skin it is cooled as the sweat evaporates.

Given the two facts above, answer the question "What evaporates from the skin?" with the following options: 
- energy
 - Water
 - solutes
 - h2o
 - pus
 - sweat
 - rain
 - phlegm


 

      sweat   