Which letter in the diagram corresponds to the layer that contains ozone and which keeps approximately 95% of the sun's ultraviolet radiation from reaching the Earth's surface?

Ultraviolet Radiation

Electromagnetic radiation with a wavelength shorter than that of visible light, but longer than X-rays.

Ozone

A reactive form of oxygen consisting of three oxygen atoms (O3), found in the Earth's stratosphere, it plays a crucial role in absorbing most of the sun's harmful ultraviolet radiation.