You are presented with the question "what generally carries deoxygenated blood?" and the following answer choices: 
- blood vessels
 - animals
 - layers of fat
 - mammals
 - critical organs
 - an organism's body
 - elephants
 - athletes

Now knowing that veins generally carry deoxygenated blood and arteries and veins are blood vessels, choose the best answer.


 

 blood vessels        