The correct answer is: D. Left auricle
The pulmonary veins carry oxygenated blood from the lungs to the left atrium. The left atrium then pumps the blood into the left ventricle. The left ventricle pumps the blood out of the heart to the rest of the body.
The right ventricle pumps deoxygenated blood from the right atrium to the lungs. The right atrium receives deoxygenated blood from the body.
The left auricle and right auricle are the two upper chambers of the heart. The left ventricle and right ventricle are the two lower chambers of the heart.