Which of the following is a recommended practice for safe refueling?

Closing all hatches and doors while refueling is a critical safety practice because it helps to minimize the risk of ignition. When hatches and doors are closed, you prevent fuel vapors from entering enclosed spaces where they could encounter a spark or flame, potentially causing a fire or explosion. This practice is essential for maintaining safety, especially considering that gasoline vapors are highly flammable and can accumulate in areas that are poorly ventilated.

By ensuring that hatches and doors are closed, you create a safer environment while handling fuel. This step is particularly important when considering the potential for unexpected ignition sources, which are more prevalent in open or poorly secured environments. Overall, the recommendation to close off compartments during refueling aligns with safety protocols to protect both the vessel and those on board from hazardous situations.