What type of action is taken when a lifeguard moves the flags in response to a rip moving into the flagged area?

The correct action taken when a lifeguard moves the flags in response to a rip moving into the flagged area is categorized as preventative action. This is because the lifeguard is actively seeking to prevent potential incidents or accidents from occurring by adjusting the swimming area to minimize the risk posed by the rip. By moving the flags, the lifeguard helps to ensure that swimmers are kept away from a dangerous area, thus protecting their safety before any harm can occur.

Preventative actions are crucial in lifeguarding as they involve steps taken proactively to manage risks in the environment, rather than responding to an incident after it has happened. In contrast, the other types of actions, while relevant in different contexts, do not apply here. Corrective action usually refers to fixing a problem that has already occurred. Remedial action might involve assisting someone who has already been affected by a rip or other danger. Reactive action would pertain to responding to an incident after it has taken place. In this scenario, the lifeguard's foresight and timely adjustment exemplify preventative measures aimed at safeguarding swimmers.