The Montreal Protocol (1987) aimed at:
Answer & Solution
Correct answer: C.
1. The 1987 UNEP agreement targeted ozone-depleting substances.
2. Production of CFCs was first frozen at 1986 levels and later phased out.
3. Refrigerators worldwide must now be CFC-free.
_Source: NCERT Class 10 Science, Ch 13 "Our Environment", §13.2.1_
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