An international treaty known as Montreal Protocol was signed to control emission of
A
UV rays
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B
Ozone
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C
CFC
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D
Oxygen
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Solution
The correct option is C CFC Montreal Protocol is treaty on the release of substance that deplete the ozone layer. CFC is the main substance that destruct the ozone layer into O2 and nascent oxygen in the presence of UV rays. Thus, the correct answer is 'CFC'.