i need ! which is the correct definition of arteriosclerosis? a. a surgical procedure in which an instrument with a tiny balloon attached is inserted into an artery to clear a blockage. b. a group of disorders that cause a thickening and hardening of arteries. c. a condition that occurs when fatty substances build up on the inner lining of arteries. d. a serious condition that occurs when the blood supply to the heart slows or stops, causing damage to the heart muscle.