Ozone hole appears over Antarctica mostly in the month of:

Correct option is C

The ozone hole over Antarctica forms during the Southern Hemisphere's spring months, which are from September to November. The depletion of the ozone layer is most pronounced in September, as the return of sunlight after the dark winter months causes chemical reactions that break down ozone molecules. By October, the ozone hole reaches its maximum size and begins to shrink in November.

Information Booster:

1. The ozone hole over Antarctica forms primarily due to chlorofluorocarbons (CFCs) and other ozone-depleting chemicals.

2. The seasonal variation in sunlight triggers a series of chemical reactions that lead to the breakdown of ozone molecules in the stratosphere, most notably during spring in the Southern Hemisphere.

3. The ozone hole reaches its maximum size during September, with recovery occurring as sunlight and temperatures stabilize in late spring.

4. The phenomenon of ozone depletion is most significant in the polar regions, with Antarctica experiencing the most severe ozone loss.

5. The hole occurs due to a combination of low temperatures and the presence of ozone-depleting chemicals, exacerbated by the polar vortex in winter.