Question

An international treaty known as the Montreal Protocol was signed to control the emission of
A) UV rays
B) Ozone
C) CFC
D) Oxygen

Answer 1

Hint: Environment consists of different things where every day so many gases or pollutants are used to release to the environment where it affects the earth in many ways, and those pollutants causing the global warming where that affect the living organism In the earth in many ways and they cause the health hazards, etc.

Complete answer:
In the earth, there are so many emissions that are released daily from industries and automobiles where among those emissions, certain gases can deplete the ozone layer, where the ozone layer is the layer that present to protect the earth from harmful UV radiations generated by the sun if this ozone gets damaged by some of the harmful emissions shows harmful effects such as global warming, which may cause serious hazards on earth in future.
So an international agreement was made and formed the Montreal protocol in the year 1987, where the motto is to reduce the production and import of the ozone-depleting gases on the earth to prevent future damage.
This Montreal protocol had set certain timings as a target to decrease the use of some harmful ozone-depleting gases and this is the most successful environment protection program, which was accepted and formed by many countries where it forms an international treaty.
And this protocol concentrated or targeted almost 96 ozone-depleting emissions and they target almost 240 industries, and they target so many emissions that include chlorofluorocarbons (CFC), and halones, and less transition chemical substances such as hydrofluorocarbons, etc.

So, the correct option is C.

Note: Montreal protocol is an environmental protection organization that was in so many countries and they form to control the harmful emissions that are formed daily by industries and automobiles, to control and to prevent the depletion of ozone and they mainly target the ozone-depleting gases such as chlorofluorocarbons, etc.