What should a lifeguard observe to prevent risk at a swimming facility?

A lifeguard's primary role is to ensure the safety of patrons at a swimming facility, and one essential component of this responsibility is the accessibility and condition of safety equipment. Observing that safety equipment, such as life rings, rescue tubes, and first aid kits, is both readily available and in proper working order is crucial in preventing risks and enhancing safety. In an emergency situation, having these tools accessible can make a significant difference in response time and effectiveness.

The other options, while related to the overall experience at a swimming facility, do not directly contribute to the immediate risk prevention in the same way. Water temperature is important for patron comfort, but it does not address safety risks in the same critical manner. Offering free swim lessons may promote swimming skills, but it does not directly mitigate risks associated with emergencies. Personal flotation devices can be helpful, but lifeguards need to enforce guidelines regarding their use to prevent misuse, which could actually lead to increased risk. Therefore, ensuring the safety equipment's accessibility and condition is the most direct and effective measure for risk prevention at a swimming facility.