Answer the following question given this paragraph: 

If you are a typical teenager, you like to eat. For your body to break down, absorb and spread the nutrients from your food throughout your body, your digestive system and endocrine system need to work together. The endocrine system sends hormones around your body to communicate between cells. Essentially, hormones are chemical messenger molecules.


Q: What are the "chemical messenger" molecules used by the endocrine system?

 Choices:

- acids

- axons

- enzymes

- hormones

A:
hormones
