Answer the following question: Fact 1: Hormones control many cell activities, so they are very important for homeostasis. Fact 2: Many of the processes of homeostasis are mediated by hormones. Given the two facts above, what does homeostasis mediate?

Options:
(A). sweating
(B). cardiac arrest
(C). keeping the dog warm
(D). cell activities
(E). Plants growth
(F). Animal survival
(G). reproduction
(H). photosynthesis
Answer:
(D).