Why does the blood returning to the heart have very little oxygen in it?

Question

(1 point)
Responses

The heart is not pumping oxygen fast enough.
The heart is not pumping oxygen fast enough.

The cells throughout the body used the oxygen.
The cells throughout the body used the oxygen.

The heart did not receive enough oxygen from the lungs.
The heart did not receive enough oxygen from the lungs.

The lungs breathed out too much oxygen.
The lungs breathed out too much oxygen.

Answer 1

The correct response is:

The cells throughout the body used the oxygen.

As blood circulates through the body, it delivers oxygen to the cells, which then use it for various metabolic processes, resulting in the blood returning to the heart with a lower oxygen content.