Which skill is essential for lifeguards to provide effective first aid?

The essential skill for lifeguards to provide effective first aid is knowledge of CPR (cardiopulmonary resuscitation). CPR is a critical life-saving technique that can be used in emergencies when someone's breathing or heartbeat has stopped. Lifeguards often encounter situations where individuals may experience cardiac arrest, and knowing how to perform CPR can significantly increase the chances of survival until further medical assistance arrives.

While physical strength and the ability to swim fast can be beneficial in emergency situations, they do not directly relate to providing first aid. A rich experience in water sports can enhance a lifeguard’s skills in assessing situations but does not equip them to perform medical interventions effectively. Thus, understanding and being trained in CPR is fundamental for lifeguards to respond appropriately during emergencies, making it a crucial skill in their role.