What step should a lifeguard take if they notice unusual behavior from a swimmer?

When a lifeguard notices unusual behavior from a swimmer, the most appropriate step is to watch the swimmer closely and intervene if necessary. This approach allows the lifeguard to maintain a vigilant observation of the swimmer's actions and assess any potential risks or distress that the swimmer may be experiencing.

By actively monitoring the situation, the lifeguard can quickly identify if the behavior escalates, which could indicate a need for immediate action to ensure the swimmer's safety. Prompt intervention can be crucial in preventing incidents such as drowning, fatigue, or other emergencies arising from the swimmer's unusual behavior.

The proactive nature of this response emphasizes the lifeguard's responsibility to prioritize safety and respond appropriately to any signs of trouble. Engaging directly with the situation rather than taking a passive approach enhances overall safety in the swimming environment.