Answer
a.
Work Step by Step
Option b. is incorrect. The vena cava is a vein that brings blood from the body back to the heart.
Option c. is incorrect. The pulmonary vein brings oxygen-rich blood from the lungs back to the heart.
Option d. is incorrect. The pulmonary artery takes oxygen-poor blood from the heart to the lungs.
Option a. is correct. The aorta is the artery that takes oxygen-rich blood from the heart and delivers it to the rest of the body.
