What activity occupies the majority of a lifeguard's time while on stand?

The activity that occupies the majority of a lifeguard's time while on stand is scanning the water. This crucial duty involves maintaining a vigilant lookout over the swimming area to detect any signs of distress or unsafe conditions. Lifeguards are trained to focus extensively on observing swimmer behaviors, looking for potential hazards, and ensuring that everyone in the water is safe.

Constant scanning is vital because situations can develop quickly, and it is essential for lifeguards to respond efficiently in emergencies. By keeping their attention on the water, lifeguards can recognize swimmers in trouble early on, potentially preventing drowning or injury. While communicating with guests, helping swimmers in distress, and filling out reports are also important aspects of a lifeguard's responsibilities, they do not consume the majority of their time on duty. Instead, focusing predominantly on scanning allows lifeguards to fulfill their primary role of ensuring the safety of all swimmers in their assigned area.