What immediate action should a flight attendant take if a passenger is unresponsive?

The appropriate immediate action when encountering an unresponsive passenger is to check for responsiveness and perform CPR if certified. This response is critical because it prioritizes the safety and well-being of the passenger by assessing their condition and taking necessary measures to provide assistance. Checking for responsiveness allows the flight attendant to determine the severity of the situation and whether immediate medical intervention is needed.

If the individual is unresponsive and not breathing or not breathing normally, initiating CPR can significantly improve survival chances until professional medical help arrives. Flight attendants are trained to handle medical emergencies, and the ability to perform CPR can be lifesaving.

The other options are either too passive or inappropriate in an emergency context. Waiting for the passenger to regain consciousness could result in a delay that could worsen the situation. Contacting ground control for assistance is important, but it should occur after ensuring immediate care is rendered. Calling for all passengers to exit is not a necessary or appropriate response unless there is a broader emergency affecting the entire aircraft, which is not indicated in this scenario.