Which pollutant released into the air during refrigeration and airconditioning is the greatest contributor to the depletion of ozone layer?(a) BHC (b) DDT (c) CFC (d) UNEP

Correct answer: (c) CFC

Explanation: Chlorofluorocarbons or CFCs are released into the air during refrigeration and air conditioning and are the greatest contributor to the depletion of the ozone layer.