Which of the following is a medical condition in which fatty deposits build up on the wall of arteries, causing them to harden and narrow?

• A. Arteriosclerosis.
• B. Vascular occlusion.
• C. Atherosclerosis.
• D. Arteriostenosis.

Answer: (C)

Verified step by step guidance

1. Step 1: Understand the key terms in the problem. The question asks for a medical condition characterized by fatty deposits building up on artery walls, leading to hardening and narrowing.
2. Step 2: Define 'Arteriosclerosis' – this term refers broadly to the thickening and hardening of artery walls but does not specifically emphasize fatty deposits.
3. Step 3: Define 'Vascular occlusion' – this means the blockage or closing of a blood vessel, which can result from various causes but is not specifically about fatty deposits.
4. Step 4: Define 'Atherosclerosis' – this is the condition where fatty deposits, called plaques, accumulate on the inner walls of arteries, causing them to harden and narrow, which matches the description in the question.
5. Step 5: Define 'Arteriostenosis' – this term means the narrowing of an artery but does not specify the cause as fatty deposits.