Answer:
b. ventricular fibrillation
Explanation:
The ventricular fibrillation is the cardiac dysrhythmias that cannot produce a pulse. For electrical impulses, a heart monitor is used to read whether there is heart beat or not.
The ventricular fibrillation is known to be life-threatening and it produces inadequate heartbeat. It begins from the bottom of the heart and can actually be triggered by an heart attack.