Question

what is indoor air quality? it measures the air quality within and around buildings. it checks the color of the air. it tells about the sound pollution in the air. it measures air pollution, mainly sulfur content, in the air.

Explanation:

Indoor air quality pertains to the air - quality conditions within and around buildings, considering factors like pollutants, ventilation, etc. It has nothing to do with air color, sound pollution, and is not mainly about sulfur content.

Answer:

It measures the air quality within and around buildings.