Where people are working, there has to be _________ to cause proper ventilation of the premises.HumidityAir changeMoistureTemperature

The correct answer for the blank in the statement "Where people are working, there has to be _________ to cause proper ventilation of the premises" is Air change.

Explanation:

Proper ventilation in a working environment is essential for maintaining air quality and ensuring employee comfort and safety. The term "air change" refers to the process of replacing the stale air inside a building with fresh air from outside. This is crucial for controlling indoor air pollutants, humidity levels, and temperature. High humidity, excessive moisture, or inappropriate temperature levels can contribute to discomfort and health issues, but it is the concept of air changes per hour (ACH) that directly pertains to ventilation effectiveness. Thus, ensuring adequate air change is vital for a healthy working environment.