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The correct answers are:
1-(C)
2-(A)
3-(D)

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The correct answer is option (d).
Explanation:
The Montreal Protocol on substances that deplete the ozone layer is an international treaty designed to protect the ozone layer by phasing out the production of ozone depleting substances like chlorofluorocarbon (CFCs), Methyl Chloroform, CTC (Carbon Tetra Chloride) halons and Methyl Bromide, etc.
The Montreal Protocol has led to the phase-out of 99% of ozone-depleting chemicals in refrigerators, air conditioners and many other products.
Therefore, option (d) is the correct answer.

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