Some 'hot gas' defrost systems reheat the refrigerant just prior to its returning to the compressor for what purpose?

Correct Answer: Option C — to prevent the damaging effects of liquid slugging

Hot gas defrost introduces high-pressure warm vapor directly into the evaporator to melt ice, but this liquidizes and can return as a destructive liquid slug to the compressor. Reheating the refrigerant prior to suction ensures complete vaporization, protecting compressor valves.