Which of the following correctly describes how air conditioning works?

The concept of air conditioning primarily revolves around the removal of heat from indoor air and the regulation of indoor climate to create a comfortable environment. While cooling water that is distributed throughout a building can describe some forms of cooling systems (like chilled water systems), it does not encapsulate the broad function of most conventional air conditioning systems, which typically use a refrigerant cycle instead.

Air conditioning units generally operate through a system that involves refrigerant moving through a cycle of evaporation and condensation, absorbing heat from the indoor air and releasing it outside. This process cools the air without necessarily requiring a water distribution system, making the description of cooling water somewhat misleading in the general context of air conditioning.

The other options represent different aspects related to air conditioning. For instance, drawing in outdoor air might be part of a fresh air intake system but does not define air conditioning as it primarily uses recirculated indoor air. Evaporative cooling methods do represent a cooling process but are specifically used in certain climates and not in all air conditioning systems. Altering humidity levels is also a function of air conditioning but is more of a beneficial side effect rather than the primary function of the technology.

In summary, while cooling water can be an element in some air conditioning systems, it does not