You are presented with the question "Puberty leads to sexual changes that travel throughout the body in what?" and the following answer choices: 
- blood
 - A drug.
 - hair
 - sleep
 - painful
 - years
 - eyes
 - chest

Now knowing that endocrine hormones travel throughout the body in the blood and puberty leads to hormonal and sexual changes, choose the best answer.


 

 blood        