Answer the following question given this paragraph: 

Blood from the body enters the right atrium of the heart. The right atrium pumps the blood to the right ventricle, which pumps it to the lungs.


Q: Which area of the human heart pumps the blood to the right ventricle?

 Choices:

- left atrium

- true atrium

- left ventricle

- right atrium

A:
right atrium
