Question

what does the ozone layer do?
it protects us from meteors
it protects us from ultraviolet radiation
it helps us breathe
it protects us from violent solar flares

Explanation:

The ozone layer is a region in Earth's stratosphere that contains a high concentration of ozone (\(O_3\)). Ultraviolet (UV) radiation from the sun can be harmful to living organisms. The ozone layer absorbs most of the sun's harmful UV - B and UV - C radiation. Meteor protection is mainly due to Earth's atmosphere in general (friction burns up most meteors), not specifically the ozone layer. The ozone layer has no role in helping us breathe (that's the role of gases like oxygen in the lower atmosphere). While the ozone layer is in the stratosphere, solar flares' effects (like coronal mass ejections) are more related to Earth's magnetosphere and ionosphere rather than the ozone layer for protection.

Answer:

It protects us from ultraviolet radiation.