You are presented with the question "what are arteries?" and the following answer choices: 
- pressure regulated
 - to move people
 - the body's largest organ
 - solid, liquid, gas
 - matter vibrating
 - layers of fat
 - principals of aerodynamics
 - it keeps an organism warm

Now knowing that arteries generally carry oxygen-rich blood and arteries regulate blood pressure, choose the best answer.


 

 pressure regulated        