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 "energy leaves from what when sweat contacts with skin" with the following options: 
- radiation
 - heat energy
 - expelled
 - vapors
 - body heat
 - heat produced
 - conduction
 - metal


 

     body heat    