What is an important reason for a lifeguard to listen while on duty?

Listening while on duty is crucial for a lifeguard because it allows them to hear cries or calls for help from swimmers who may be in distress. In emergency situations, swift and effective responses are vital, and often the first indication of a problem comes from the sounds made by individuals in the water. Swimmers who are struggling may not always be visible, especially in crowded or chaotic environments, so paying attention to auditory signals can help a lifeguard quickly identify and respond to emergencies. This attentiveness can save lives, making it an essential part of a lifeguard's responsibilities.

Monitoring the temperature of the water, interacting with colleagues, and assessing water quality through sound, while important in their own contexts, do not directly address the immediate safety and rescue of individuals in the water.