Final answer:
The incorrect statement about ozone in Earth's stratosphere is that its presence was crucial to the origin of life. While it protects existing life from UV radiation, its role in the origin of life is not substantiated.
Step-by-step explanation:
The statement about ozone (in Earth's stratosphere) that is not true is "A) The presence of ozone was crucial to the origin of life." While ozone protects life on Earth from harmful ultraviolet (UV) radiation, which could increase the rate of mutations and cancers, and has been depleted by human activities such as the emission of chlorofluorocarbons (CFCs), it was not crucial to the origin of life. Rather, it played a significant role in protect existing life by absorbing UV radiation and allowing for more complex biological processes to develop on the surface of the Earth.
The depletion of the ozone layer leads to an increase in UV radiation, posing a significant risk to life by causing an increase in skin cancers and mutations among land-based life forms. International efforts to Phase out the production and emission of CFCs have led to a gradual decrease in the depletion of the ozone layer, highlighting the success of collective action.