You are presented with the question "what do glands secrete?" and the following answer choices: 
- Energy.
 - thiamine
 - vitamins
 - allow growth
 - Energy
 - hormones
 - Bodily water
 - brain

Now knowing that endocrine hormones travel throughout the body in the blood and endocrine glands secrete directly into the blood, choose the best answer.


 

      hormones   