A) All veins carry deoxygenated blood
B) All veins carry oxygenated blood
C) They carry blood from organs towards heart
D) They carry blood from heart towards organs
Correct Answer: C
Solution :
The veins are thin walled as compared to arteries. They carry blood from organs to heart. Most of the veins carry deoxygenated blood but pulmonary vein carry oxygenated blood.
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