Blood is transported from the right and left ventricles of the heart to all body parts by the:

A) veins.
B) arteries.
C) capillaries.
D) atria.

Arteries are responsible for carrying oxygenated blood away from the heart to all parts of the body, while veins carry deoxygenated blood back to the heart. Capillaries are the smallest of the body's blood vessels and are responsible for the exchange of oxygen, carbon dioxide, and nutrients between the blood and body tissues. Atria are the upper chambers of the heart that receive blood from the veins and pump it into the ventricles.