Answer: C. coronary arteries
Explanation: Coronary artery disease (CAD) is one of today’s leading health problems for both men and women and affects millions of people in the United States. CAD is a condition in which plaque builds up inside the coronary arteries—also known as atherosclerosis. This narrows the arteries and limits the amount of blood and oxygen that the heart can receive. The lack of oxygen to the heart is called ischemia, and the resulting pain is called angina... PF