Blank production has been linked to an increase in the occurrence of skin cancers caused by holes in the ozone layer.
a. fossil fuel
b. greenhouse gas
c. cfc

The answer is clearly {B. the greenhouse gases.}
The greenhouse gas put a hole in our ozone. We can tell that by the climate change all throughout the world today. By the pallor caps melting, the the sever weather storms, and the extreme trouts during the summer.

The correct answer is letter B, greenhouse gas production has been linked to an increase in the occurrence of skin cancers caused by holes in the ozone layer. As greenhouse gases continue to penetrate the atmosphere, the direct heat of the sun's rays also penetrate other layers of the Earth. This in turn causes a negative impact not only on people's health but also on other living organisms.

Exposure  to toxic substances, alcohol or tobacco  during pregnancy, exposure to lead, or last trama to the brain from head injury or illness.

Hope this helps!