Fact 1: Apan is used for cooking food by heating food in it on a stove.

Fact 2: Heat pan, add cooking oil to pan.

Given the two facts above, answer the question "what heats food?" with the following options: 
- water
 - electricity
 - ice
 - Enzymes
 - cooking oil
 - cells
 - Fuel cells
 - kinetic energy


 

     cooking oil    