Concept:The pulmonary artery is the only artery that carries deoxygenated blood, from the heart to the lungs.Explanation:The aorta carries oxygenated blood from the heart to the body.The pulmonary artery carries deoxygenated blood from the heart to the lungs for oxygenation.The pulmonary vein carries oxygenated blood from the lungs to the heart.The renal artery carries oxygenated blood to the kidneys.Answer:B. Pulmonary artery