You are presented with the quiz "Energy that comes from body heat can help with " But you don't know the answer, so you turn to your teacher to ask for hints. He says that "evaporation of sweat uses energy, and the energy comes from body heat" and "when sweat is evaporated into the air, it provides additional cooling". So, what's the best answer to the question?

Pick your answer from:
I. recovery.
II. commuting.
III. movement.
IV. cooling.
V. strength.
VI. stay warm.
VII. health.
VIII. motion.
The answer is:
IV.