You are presented with the question "_ carry signals that control sexual development and reproduction." and the following answer choices: 
- photons
 - sex hormones
 - nerves
 - Most plants
 - organs
 - orchids
 - animals
 - insects

Now knowing that sex hormones are chemical messengers that control sexual development and reproduction and chemical messengers carry signals from one nerve branch to another, choose the best answer.


 

  sex hormones       