Fact 1: The vanes rotating in an electric fan causes air to move.

Fact 2: Air speed is an important contributor to cooling of skin temperature.

Given the two facts above, answer the question "What do electric fans cool?" with the following options: 
- energy
 - kinetic energy
 - Human skin
 - sensory neurons
 - an object
 - deuterostomes
 - heat energy
 - the skin


 

   Human skin      