Which of the following is a proper fueling tip?

The correct choice emphasizes the importance of safety during the fueling process. Ensuring that the engine is off is crucial because running engines can generate sparks or heat, increasing the risk of fire or explosion when combined with fuel fumes. Additionally, having no one onboard during fueling minimizes the potential for accidents and distractions, further enhancing safety.

It's important to adopt safe fueling practices to protect both the vessel and those around it. Fueling while the engine is running, allowing passengers onboard, or using a cigarette lighter to check for leaks are unsafe actions that can lead to dangerous situations, such as fires, injuries, or accidents. Understanding these safety measures is essential for responsible boating and protecting everyone involved.