Answer the following question: Fact 1: Hormones are chemical messengers that control many body functions. Fact 2: Vitamins function as catalysts in chemical reactions in the body. Given the two facts above, what are chemical messengers that are catalysts in the body?

Select from:
i. allow growth;
ii. acetic acid;
iii. fibers;
iv. photons;
v. fever;
vi. hormones;
vii. proteins;
viii. genes;
Answer:
vi.