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. Given these facts, energy leaves from what when sweat contacts with skin among the following options:
- radiation
 - heat energy
 - expelled
 - vapors
 - body heat
 - heat produced
 - conduction
 - metal


 

     body heat    