IAQ stands for Indoor Air Quality.

• A. Industrial Air Quality
• B. Internal Air Quality
• C. Indoor Air Quality
• D. Integrated Air Quotas

Answer: (C)

IAQ is about the air inside buildings and how clean and healthy it is for the people inside. IAQ stands for Indoor Air Quality, with “Indoor” signaling the space indoors and “Air Quality” describing the level of contaminants, odors, and overall air health. The other options don’t fit because they aren’t the standard term used in building science: Industrial Air Quality would point to factory environments, Internal Air Quality isn’t the established term, and Integrated Air Quotas isn’t a recognized concept. In green architecture, focusing on IAQ means considering ventilation, filtration, humidity, and pollution sources to keep the indoor environment safe and comfortable.