Answer :
Final answer:
After verifying an adult victim's unresponsiveness, the rescuer should call for emergency medical help and begin performing CPR.
Explanation:
An emergency response is an immediate, systematic response to an unexpected or dangerous occurrence.
The next step is to call for medical help by calling an appropriate emergency phone number, such as 911 in the U.S., when a rescuer confirms that there's no responsive adult victim. While waiting for the medical professionals to arrive, the rescuer should start providing CPR (Cardiopulmonary resuscitation) to the victim.
CPR involves performing chest compressions and rescue breaths to help circulate oxygenated blood throughout the body until further medical help arrives.
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