Available choices: (A). cell walls; (B). parasites; (C). dust; (D). layers of fat; (E). Veins and arteries.; (F). free nerve endings; (G). it keeps an organism warm; (H). ice;
Given those answer options, answer the question: Fact 1: Pressure receptors are found mainly in the skin. Fact 2: All pain receptors are free nerve endings. Given the two facts above, what are found in skin?
A:
(F).