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The international treaty that phased out CFC use to protect the ozone layer is the:
AKyoto Protocol of 1997 on greenhouse gas emissions
BMontreal Protocol of 1987 on ozone-depleting CFCs
CParis Agreement of 2015 on global climate change
DRio Earth Summit Declaration of 1992 on biodiversity
Answer & Solution
Correct answer: B. Montreal Protocol of 1987 on ozone-depleting CFCs
The Montreal Protocol (1987) phased out CFCs and other ozone-depleting substances. Kyoto Protocol is on greenhouse gases; Paris Agreement is on climate change.
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