What should a lifeguard do if they notice a swimmer struggling in the water?

When a lifeguard notices a swimmer struggling in the water, activating the emergency response and performing a rescue when it is safe to do so is the appropriate action. This option reflects the lifeguard's responsibility to ensure the safety of all swimmers while following established protocols.

This approach involves assessing the situation and confirming that it is safe to enter the water or perform a rescue. By activating the emergency response, the lifeguard ensures that additional resources and support are on the way, which can be critical in managing the situation effectively and providing necessary assistance. It's important to prioritize safety, both for the distressed swimmer and for the lifeguard and other individuals in the vicinity.

In contrast, waiting to see if the swimmer can help themselves does not adequately address the immediate risk and could lead to a more dangerous situation. Jumping in without assistance disregards safety protocols and could place the lifeguard at risk, possibly resulting in two victims needing rescue. While notifying other swimmers to stay away can be a part of the response, it does not address the need for immediate intervention to assist the struggling swimmer. Thus, the correct course of action prioritizes both response and safety, ensuring effective rescue efforts.