What is the best course of action if a lifeguard sees a patron making a dangerous dive?

The most appropriate action when a lifeguard observes a patron making a dangerous dive is to alert them to the danger and enforce facility rules. This approach prioritizes the safety of all patrons in the facility. By informing the diver of the risks involved, such as potential injury from improper diving techniques or hitting the bottom of the pool, the lifeguard is taking proactive steps to prevent an accident before it occurs. Enforcing facility rules is critical because these rules are designed to promote safe behaviors, and adherence to them helps maintain a secure environment for everyone.

Additionally, taking this action shows the lifeguard's responsibility to monitor and manage the safety of the patrons effectively. While other options might appear to handle the situation differently, they do not appropriately address the potential risks involved with dangerous diving, thereby failing to prioritize safety. Ignoring the behavior could lead to serious accidents, showing a lack of vigilance. Joining in to demonstrate a safe dive could misinterpret the situation, as it might encourage further unsafe diving behaviors rather than establishing a clear boundary. Asking the patron to leave the facility could be seen as an extreme response and may not be necessary if the potential for correction is present. Thus, alerting the patron and enforcing facility rules is the best practice in ensuring