You are presented with the question "A what is used to keep food warm or to heat it up?" and the following answer choices: 
- heat
 - gas
 - pan
 - foil
 - freezer
 - fur
 - bag
 - jacket

Now knowing that apan is used for cooking food by heating food in it on a stove and an oven, stove, and microwave are available to keep food warm or to heat it up, choose the best answer.


 

   pan      