Q: Fact 1: Apan is used for cooking food by heating food in it on a stove. Fact 2: An oven, stove, and microwave are available to keep food warm or to heat it up. Given the two facts above, a what is used to keep food warm or to heat it up?

Available options:
a). heat
b). gas
c). pan
d). foil
e). freezer
f). fur
g). bag
h). jacket
The answer is:
c).