The correct answer is: C. Except the pulmonary artery, all other arteries carry oxygenated blood.
Arteries carry blood away from the heart, while veins carry blood towards the heart. Oxygenated blood is blood that has just picked up oxygen from the lungs. Deoxygenated blood is blood that has just delivered oxygen to the tissues and is now carrying carbon dioxide back to the lungs.
The pulmonary artery is the only artery that carries deoxygenated blood. It carries blood from the heart to the lungs. The pulmonary veins are the only veins that carry oxygenated blood. They carry blood from the lungs to the heart.
All other arteries and veins carry either oxygenated or deoxygenated blood, depending on the direction of blood flow.
A. All arteries carry oxygenated blood
This is incorrect because the pulmonary artery carries deoxygenated blood.
B. All veins carry oxygenated blood
This is incorrect because the pulmonary veins carry deoxygenated blood.
D. Except the pulmonary vein, all other veins carry oxygenated blood
This is incorrect because the pulmonary artery carries deoxygenated blood.