Final answer:
The air that is removed from a workspace and building via an HVAC system is known as Exhaust. It helps in maintaining indoor air quality by controlling odors, humidity, and pollutant levels.
Step-by-step explanation:
The name given to air that is removed from a workspace and building through an HVAC system is C. Exhaust. The purpose of exhaust air is to remove contaminants and moisture from an indoor environment to maintain air quality and comfort. While supply air is the clean, filtered, and conditioned air brought into the space, return air is that which is drawn back into the system to be conditioned again. Exhaust air, on the other hand, is expelled from the premises, often through ducts and vents specifically designed for this purpose. The presence of exhaust helps control odors, humidity, and pollutant levels within the building, playing a crucial role in the ventilation aspect of the HVAC system.