Narrowing of the coronary arteries due to buildup of debris along the artery

The correct answer is coronary artery disease.

Explanation:

The narrowing of blockage of the coronary arteries, generally resulting due to atherosclerosis is known as coronary artery disease. Atherosclerosis also is known as the clogging or hardening of the arteries and is the accumulation of fatty deposits and cholesterol on the artery's inner walls.  

These fatty deposits of plaques can prevent the flow of the blood to the muscles of the heart by physically choking the artery or by resulting in unusual artery function and tone. In the absence of a sufficient supply of blood, the heart becomes deficient of the essential nutrients and oxygen it requires to function appropriately. This can further result in angina or chest pain.  

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