Q: Fact 1: Thick fur can be used for keeping warm. Fact 2: Pelts are the skins of animals with the fur attached. Given the two facts above, what can be used by an animal to keep warm?

Choose from:
I. a thick pelt.
II. heat energy.
III. evaporation.
IV. energy.
V. kinetic energy.
VI. electricity.
VII. four limbs.
VIII. organic molecules.
The answer is:
I.