What should be done before starting the engine of a boat?

Before starting the engine of a boat, ensuring that all passengers are safely seated is fundamental for safety. This action helps to prevent accidents or injuries that could occur if the vessel begins to move unexpectedly. When passengers are seated, it minimizes the risk of them falling overboard or being thrown off balance, especially during maneuvers or in choppy waters.

While clearing items from the deck and checking the fuel level are important steps in boat preparation, they do not address the immediate safety of individuals aboard. Starting the engine while moving is unsafe and can lead to severe consequences. Therefore, prioritizing the seating of all passengers is the correct and most responsible action before beginning engine operation.