Fact 1: Organisms use lipids to store energy. Fact 2: FATS, or lipids, are vital nutrients. Given the two facts above, what is used by organisms to store energy?

Choose your answer from: (a). Carbon. (b). feces. (c). sugar. (d). food. (e). Energy. (f). fats. (g). trees. (h). brains.
The answer is:
(f).