Question

our organs get the nutrients they need most directly from... blood pumped by the heart. the alveoli of the lungs. the veins that flow away from the heart. blood pumped by the kidneys.

Explanation:

The heart pumps blood that carries nutrients to organs. Alveoli are for gas - exchange, veins carry blood to the heart (not away), and kidneys filter blood not pump it to distribute nutrients.

Answer:

blood pumped by the heart.