Multiple choice

blood is carried to the heart via

  1. veins

  2. arteries

  3. dilated vessels<span id="_wysihtml5-undo" class="_wysihtml5-temp">

  4. capillaries

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A Correct answer
Explanation

Veins carry blood back to the heart. They have thinner walls and valves to prevent backflow. Arteries carry blood away from the heart. Capillaries are tiny exchange vessels.