Description:
The correct answer is:
High humidity worsens air quality, low humidity improves air quality.
Explanation:
- High humidity can worsen air quality by promoting mold growth, dust mites, and bacteria, which can trigger allergies and respiratory issues. It also causes pollutants like smoke and volatile organic compounds (VOCs) to linger in the air longer.
- Low humidity helps air pollutants disperse more easily, improving overall air quality, though excessively low humidity can cause dry air that irritates the respiratory system.