What is the mechanism by which a vapor-cycle cooling system evacuates water?

The correct choice highlights a critical principle of how a vapor-cycle cooling system operates. This system relies on the thermodynamic properties of refrigerants, which allows it to manage moisture effectively in the cabin environment.

In a vapor-cycle cooling system, the evaporation process lowers the boiling point of water in the air, enabling it to transform into vapor at lower temperatures. When the air from the cabin passes over the evaporator coil, which is cooled by the refrigerant evaporating within it, the moisture in the air condenses on the coil's surface. As the refrigerant absorbs heat from the cabin air, it causes water to evaporate. This process effectively draws out the water vapor from the cabin air as the temperature drops, enhancing dehumidification.

The other choices do not accurately represent the main mechanism involved. For instance, while compressing vapor can reduce pressure and play a role in refrigeration cycles, it is not the primary process involved in evacuating water. Increasing temperature does assist in evaporation, but it is not the mechanism for drawing out moisture in a cooling system. Filtering water from the refrigerant is also not part of the standard operation model, as the cooling cycle focuses on vaporization and condensation instead. The correct answer encapsulates the essence of moisture management