Correct option is A
The correct answer is (A) Asphalt.
Explanation:Asphalt does not deplete the ozone layer. Propellants, refrigerants, and foam-blowing agents contain harmful chemicals like CFCs that contribute to ozone depletion.
Incorrect Options Explanations:
- Propellants: Contain CFCs that harm the ozone layer.
- Refrigerants: Release CFCs/HCFCs, damaging the ozone.
- Foam-blowing agents: Use CFCs that affect the ozone.
Information Booster:
- Ozone layer absorbs harmful UV rays.
- The Montreal Protocol (1987) seeks to phase out ozone-depleting substances.