Answer: The aorta (an artery)
Explanation: Aorta is the main artery of the body that carries oxygenated blood from the heart into the circulatory system. Arteries are blood vessels that carry oxygenated blood from the heart to other parts of the body with the exception of the pulmonary artery which carry deoxygenated from the right side of the heart to the lungs where they get oxygenated.
