Fibrillation means that:
A) the heartbeat is dangerously irregular
B) the heart is beating too fast
C) the heart has stopped beating
D) the heart has suffered a heart attack
A
Explanation: Fibrillation is a dangerously irregular heartbeat. Tachycardia is the heart beating too fast. Cardiac arrest means that the heart has stopped beating. If someone has had a myocardial infarction, they have suffered a heart attack.
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