Question

which household activity is a significant source of volatile organic compounds (vocs)? boiling water for tea or coffee opening windows for fresh air using chemical - based cleaning products vacuuming with a hepa filter

Explanation:

Boiling water only involves water changing state, no VOCs. Opening windows and vacuuming with HEPA filter are for air circulation/cleaning, not emitting VOCs. Chemical - based cleaning products often contain organic chemicals that can volatilize, releasing VOCs.

Answer:

C. using chemical - based cleaning products