Fact 1: Testosterone stimulates the reproductive organs to develop into male organs.

Fact 2: Examples of anabolic hormones are testosterone and nandrolone.

Given the two facts above, answer the question "What stimulates the reproductive organs to develop into male organs?" with the following options: 
- Something coming from a gland
 - Chemical energy
 - A compound that donates proton
 - certain anabolic hormones
 - Something made from fermented ricce
 - Electrical energy
 - heat produced
 - sensory neurons


 

    certain anabolic hormones     