Question

what indoor activity is most likely to increase the levels of particulate matter in the air? boiling water on an electric stove burning wood in a fireplace running an air purifier washing dishes in a dishwasher

Explanation:

Burning wood in a fireplace releases particulate matter (such as soot, ash, and tiny particles) into the air. Boiling water on an electric stove mainly produces water vapor (not particulate matter). Running an air purifier is designed to reduce particulate matter in the air. Washing dishes in a dishwasher does not generate significant particulate matter that would increase its levels in the air.

Answer:

burning wood in a fireplace