Fact 1: Sweat wets the skin, and when it evaporates, it cools the body. Fact 2: Sweat is released from sweat glands beneath the skin, and as it evaporates, the skin is cooled. Given the two facts above, what cools the skin?

Possible answers: A). humidity. B). temperature. C). condensation. D). Solar energy. E). evaporation. F). vaporization. G). layers of fat. H). water vapor.
The answer is:
E).