What term describes the process of supplying or removing air from a space?

The term that describes the process of supplying or removing air from a space is ventilation. Ventilation is essential for maintaining indoor air quality and for regulating temperature and humidity levels. This process involves bringing in fresh air from outside and expelling stale air, which can help reduce pollutants, control moisture, and provide a comfortable living environment.

While air circulation, heating, and cooling play significant roles in the overall climate control of a space, they do not specifically refer to the exchange of air itself. Air circulation typically involves the movement of air within an interior space and doesn't necessarily include the introduction or removal of air to and from the outside. Heating and cooling are focused on temperature adjustment rather than the air exchange process. Thus, ventilation is uniquely associated with the movement of air in and out of a space, making it the correct answer to the question asked.