The heart pumps ______ deprived blood to the lungs, and _______ rich blood to the body.

The heart's function involves effectively routing blood throughout the body. Blood that is deprived of oxygen, which is considered deoxygenated, is pumped by the right side of the heart to the lungs for reoxygenation. In the lungs, carbon dioxide is exchanged for oxygen during the respiratory process. Consequently, the blood returns to the left side of the heart, now rich in oxygen.

When this oxygen-rich blood leaves the heart, it is distributed to the rest of the body to supply tissues and organs with the necessary oxygen for cellular processes.

The correct answer highlights this essential function of the heart in oxygen exchange. Thus, it characterizes the blood's composition accurately; carbon dioxide and deoxygenation is relevant to blood being transported to the lungs, while oxygen is significant regarding blood being sent to the body. The other choices do not correctly specify the nature of the blood in both circumstances, as they focus on nutrients or mistakenly interchange terms that are not aligned with the cardiovascular process of oxygen delivery and carbon dioxide removal.