Testosterone stimulates the reproductive organs to develop into male organs, and for men, however, the hormone in question is testosterone. Given these facts, what stimulates the reproductive organs to develop into male organs among the following options:
- a hormone
 - bioaerosols
 - Energy.
 - Energy
 - Leptospirosis
 - a doorbell
 - seeds
 - Chlorophyll


 

 a hormone        