The largest artery in human body is A. Aorta B. Capillary C. Vena cava D. Pulmonary vein

The correct answer is A. Aorta.

The aorta is the largest artery in the human body. It is a muscular artery that carries oxygen-rich blood from the heart to the rest of the body. The aorta begins at the left ventricle of the heart and branches into smaller arteries that supply blood to the head, neck, arms, chest, abdomen, and legs.

The aorta is a very important artery because it supplies blood to all of the major organs in the body. If the aorta is damaged, it can cause serious health problems, including heart attack, stroke, and kidney failure.

The other options are incorrect because they are not arteries.

• Option B, capillary, is the smallest blood vessel in the body. Capillaries connect arterioles to venules and allow for the exchange of nutrients and waste products between the blood and the tissues.
• Option C, vena cava, is the largest vein in the body. It carries deoxygenated blood from the body back to the heart.
• Option D, pulmonary vein, carries oxygenated blood from the lungs to the heart.

I hope this helps!