Pick your answer from:
[A]. fat;
[B]. air;
[C]. skin;
[D]. warmth;
[E]. bone movement;
[F]. H20;
[G]. food;
[H]. heat;

Fact 1: An animal requires energy to move. Fact 2: All foods provide energy. Given the two facts above, what does an animal require to move?
Answer:
[G].