In the event that the lifeguard is the sole staff member on duty, what must they be able to do?

In scenarios where a lifeguard is the only staff member on duty, the ability to call for additional assistance is critical for ensuring the safety of all patrons. Having a reliable alarm system or emergency communication method enables the lifeguard to summon help quickly in case of an emergency, such as a drowning incident or a medical emergency involving a patron. This capability is essential because the lifeguard may need to provide immediate assistance or perform lifesaving techniques, but having support can significantly increase the effectiveness of the response.

The other options, while valuable skills and procedures for a lifeguard to possess, do not directly address the immediate need for additional personnel. CPR is an important lifesaving skill, swimming proficiency is vital for rescue capabilities, and documenting incidents is crucial for record-keeping and future prevention measures. However, none of these skills can replace the urgency and necessity of being able to quickly call for help when a lifeguard is alone on duty, as the timely arrival of additional personnel can make a vital difference in emergency situations.