Question 1125 Deck Safety

The correct answer is C) Air flow through the radiator. The proper operation of a radiator-cooled engine is dependent on adequate air flow through the radiator to dissipate the heat generated during engine operation. The radiator relies on the circulation of coolant through the engine block and the flow of air across the radiator fins to effectively remove the heat. Without sufficient air flow, the coolant will not be adequately cooled, leading to overheating and potential engine damage. The other options, such as jacket water treatment, heat of combustion, and cooling water pressure, while important factors, are not the essential element for the proper operation of a radiator-cooled engine.