I believe the answer is b.. but it could be a.. id go with be.. im sorry if im wrong.. :/
Answer:
Heart failure and heart attack are both forms of heart disease. They have some common causes. But they also differ in key ways. Most heart attacks happen suddenly when one of the arteries leading to the heart becomes blocked and cuts off the blood flow.
Explanation:
3 A a natural medication used in place of antibiotics
Heat<span> rash
</span>heat<span> cramps
</span>heat<span> syncope </span>
