Heart attacks can result from a blockage of a. The trachea
b. The bronchus
c. A coronary artery
d. The superior vena cava​

C

Explanation:

Oftentimes you'll hear that the coronary artery (a very important artery) has been blocked/ruptured, leading to a heart attack. That artery leads directly to the heart. It supplies blood to the heart.

c

Explanation:

the answer

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