Question

how is noise pollution best described? an unpleasant scent or smell unwanted or disruptive sound airborne chemicals

Explanation:

To determine the best description of noise pollution, we analyze each option:

• "An unpleasant scent or smell" describes air pollution related to odors, not noise.
• "Unwanted or disruptive sound" aligns with the definition of noise pollution, as noise refers to sound that is not desired and can disrupt activities or environments.
• "Airborne chemicals" describes air pollution from chemical substances, not noise.

Answer:

unwanted or disruptive sound