Final answer:
Gas fumes are most likely to accumulate in the bilge area of a boat. Proper ventilation and inspection for fuel leaks are important to prevent gas fume accumulation.
Step-by-step explanation:
Gas fumes are most likely to accumulate in the bilge area of a boat.
The bilge area is the lowest part of the boat where water, fuel, and other liquids collect. Since gas fumes are denser than air, they tend to sink and collect in this area.
To prevent gas fume accumulation, it is important to have proper ventilation in the bilge area and to regularly inspect for any fuel leaks or spills that could contribute to the release of gas fumes.