The correct answer is A - 4, B - 3, C - 2, D - 1.Concept:All living tissues in the body require oxygenated blood to survive.The heart is the body's pumping organ that is constantly active and requires an uninterrupted supply of oxygenated blood.Arteries are the blood vessels that carry blood from the heart to different body parts.Veins are another type of blood vessel that brings blood from different body parts to the heart, i.e, carry blood toward the heart. Explanation:Pulmonary arteries:The pulmonary arteries are responsible for transporting impure or deoxygenated blood from the heart to the lungs.Capillaries:Capillaries are the blood vessels that connect the arteries to the veins. The arteries transport oxygen-rich blood to the capillaries, where the exchange of oxygen and carbon dioxide takes place.The waste-rich blood is then delivered by the capillaries to the veins for transport back to the lungs and heart.Coronary arteries:The coronary arteries are blood vessels that carry oxygenated blood to the heart muscles.The heart muscle, like all other tissues in the body, requires oxygen-rich blood to function.Pulmonary veins:Pulmonary veins work in the opposite direction of pulmonary arteries, collecting oxygenated blood and transporting it from the lungs back to the heart.The veins connect to form larger veins. Each lung has two pulmonary veins that carry blood to the top left chamber of the heart, known as the atrium.List I (Blood Vessel)List II (Function)A.Pulmonary artery1.Carries blood from heart to lungsB.Capillaries2.Connection between arteries and veinsC.Coronary artery 3.Carries blood to heart muscleD.Pulmonary vein4.Carries blood from lungs to heart