Question

multiple choice question
what vessels allow exchange of oxygen, carbon dioxide, and nutrients between the blood and the tissue fluid surrounding cells?
veins
capillaries
arteries

Explanation:

Capillaries are the smallest blood vessels with thin walls that enable the exchange of oxygen, carbon - dioxide, and nutrients between blood and tissue fluid. Veins carry deoxygenated blood back to the heart and arteries carry oxygenated blood away from the heart, neither of which are the primary site for such exchanges.

Answer:

B. capillaries