Final answer:
Epinephrine is the drug of choice for asystole.
Step-by-step explanation:
The drug of choice for asystole is epinephrine. Asystole is a condition where there is a lack of heartbeat or cardiac activity. In this situation, CPR should be initiated immediately and continued until intravenous (IV) or intraosseous (IO) access is achieved. Epinephrine is a medication that is commonly used in cardiac arrest situations, including asystole, as it helps to stimulate the heart and restore its normal rhythm.