Question

what is the role of the heart in the circulatory system? to filter blood to store oxygen to produce red blood cells to pump blood throughout the body

Explanation:

The heart is a muscular organ that contracts rhythmically to move blood through the blood - vessels of the circulatory system. It is not responsible for filtering blood (kidneys do that), storing oxygen, or producing red blood cells (bone marrow does that).

Answer:

D. To pump blood throughout the body