Respuesta :
Answer:
I believe it's D) cardiovascular
Explanation:
The gas goes into the lungs then into the heart to turn the deoxygenated blood into oxygenated blood.
The system responsible for the exchange of gases between the blood and atmospheric air is cardiovascular system.
The cardiovascular system consists of the heart, the blood, and blood vessels. The heart's main job is to pump blood throughout a person's body. The blood vessels job is to take the blood and transport it to different locations inside the body.