This international agreement to reverse ozone depletion.

kyoto protocol
montreal protocol
an inconvenient truth
declaration of independence

The Montreal Protocol agreement helped to reverse ozone depletion.

Option B

Explanation:

The stratospheric ozone layers safeguards the Earth against harmful ultraviolet radiation which cause skin cancers and cataracts to humans, as well as physiological hazard to animals and all plants.

With the increase in signs of ozone depletion, government has ratified the Montreal Protocol, a global agreement to halt the production of harmful chemicals called chlorofluorocarbons (CFC's). At that time, CFC's were used in hairsprays, and refrigerators.

The Protocol on substances which deplete ozone layer (Vienna Convention on the Protection of Ozone Layer). This international convention aimed at protecting ozone layer by producing a large number of substances responsible for ozone depletion's.