Question 1116 Deck Safety

The correct answer is C) the bilges, cabins, etc. are thoroughly ventilated. Ventilation is a critical safety procedure before starting a gasoline engine on a motorboat. Gasoline vapors can accumulate in enclosed spaces, creating a highly flammable and explosive environment. Thorough ventilation ensures that any accumulated vapors are cleared out, reducing the risk of fire or explosion when the engine is started. The other options, while important, are not as directly related to the immediate safety concern of preventing a gasoline vapor-related incident.