Fact 1: When an animal moves , chemical energy is converted to mechanical energy. Fact 2: Digestive processes include mechanical, chemical and enzymatic mechanisms. Given the two facts above, what makes it possible for an animal to move?

Choose from: a. Limbs; b. four limbs; c. digestion; d. stamina; e. motility; f. magnets; g. radiation; h. weather;
Answer:
c.