How do veins differ from arteries

Veins carry deoxygenated blood (oxygen poor blood) from other parts of the body to the heart while arteries carry oxygenated blood (oxygen rich blood) away from the heart to other parts of the body.

Explanation: Arteries carry oxygenated blood with the exception of pulmonary artery while veins carry oxygen poor blood with the exception of pulmonary vein.

Arteries carry blood away from the heart while veins carry blood towards the heart.

Arteries have thick, elastic, mucscular walls while veins have thin, less elastic walls.

Arteries have smaller holes inside through which blood passes while veins have wider holes.

Blood flows through the arteries at high pressure while blood flows through the veins at low pressure.

the answer to your question is b