Question

one way to protect operators and other workers from illnesses caused by demolition dust is to ____. wear a piece of cloth around the nose and mouth take breaks often spray the demolition area with water clear the dust with a fan

Explanation:

Wearing a piece of cloth may not be effective against fine - dust. Taking breaks doesn't prevent dust inhalation. Clearing dust with a fan can spread it. Spraying the demolition area with water can wet the dust and reduce its airborne presence, protecting workers.

Answer:

spray the demolition area with water