Final answer:
None of the listed options are correct; respiratory problems, skin cancer, and eye damage are all health risks associated with increased UV exposure due to a depleted ozone layer.
Step-by-step explanation:
The question is asking which of the listed items is not a health risk associated with a depleted ozone layer. The correct answer would be 4) None of the above. Each of the listed effects; respiratory problems, skin cancer, and eye damage, are indeed health risks that can be associated with increased exposure to ultraviolet (UV) radiation as a result of a depleted ozone layer. A depleted ozone layer allows more harmful UV-B radiation to reach the Earth's surface, which can lead to these health issues among others.