What should guests' movement indicate to a lifeguard?

The correct answer is significant because guests' movements in the water can provide crucial information about their safety and well-being. Signs of distress, such as erratic movements, flailing arms, or inability to keep their heads above water, are indicators that someone may be struggling. A lifeguard's primary responsibility is to ensure the safety of all swimmers, so recognizing these signs is essential for effective intervention.

In contrast, normal swimming behavior generally indicates that individuals are comfortable and confident in the water, while confidence in the water often manifests as controlled, rhythmic movements. Furthermore, a desire to leave the pool does not inherently relate to someone's safety in the water; understanding guest movement in terms of distress is a more critical aspect for lifeguards to monitor. This awareness allows lifeguards to respond promptly and appropriately to prevent accidents and ensure the well-being of all guests.