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, answer the question "What are chemical messengers that are catalysts in the body?" with the following options: 
- allow growth
 - acetic acid
 - fibers
 - photons
 - fever
 - hormones
 - proteins
 - genes


 

      hormones   