You are presented with the quiz "what are arteries?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "arteries generally carry oxygen-rich blood" and "arteries regulate blood pressure". So, what's the best answer to the question?

Choose your answer from:
- 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
Answer:
pressure regulated