What is the primary function of the ozonosphere?

The primary function of the ozonosphere is to shield the Earth from ultraviolet (UV) rays emitted by the sun. This layer of ozone, located in the stratosphere, absorbs the majority of the sun's harmful UV radiation, which can cause skin cancer, cataracts, and other negative effects on living organisms.

While the ozonosphere plays a role in temperature regulation indirectly by absorbing UV radiation, its main purpose is protective. The absorption of UV rays also helps in maintaining the ecological balance by allowing life to flourish on Earth without being severely harmed by these high-energy rays. Other functions, such as influencing weather patterns or supporting life forms, are either secondary or depend on the protective role of the ozonosphere against harmful radiation. Thus, the correct answer highlights its essential protective function.