Fact 1: When electricity flows to a light bulb , the light bulb will turn on.

Fact 2: Most of the energy a light bulb uses turns into heat.

Given the two facts above, answer the question "When electricity flows to a light bulb, the energy it uses becomes what?" with the following options: 
- less
 - shadowed
 - energy
 - waves
 - heat
 - unique
 - matter
 - removed


 

     heat    