The correct answer is C. UV radiations.
Non-ionizing radiations are those that do not have enough energy to remove electrons from atoms or molecules. They can, however, cause damage to biological cells by exciting electrons to higher energy levels. This can lead to the formation of free radicals, which can damage DNA and other cellular components.
UV radiation is a type of non-ionizing radiation that is produced by the sun and other sources. It is divided into three bands: UVA, UVB, and UVC. UVA radiation is the most common type of UV radiation and can penetrate the skin to the dermis, where it can cause premature aging and wrinkling. UVB radiation is less common than UVA radiation, but it is more energetic and can cause sunburn and skin cancer. UVC radiation is the most energetic type of UV radiation, but it is absorbed by the ozone layer and does not reach the Earth’s surface.
Gamma rays, beta rays, and X-rays are all types of ionizing radiation. They have enough energy to remove electrons from atoms or molecules, which can lead to the formation of free radicals. Free radicals can damage DNA and other cellular components, which can lead to cancer.
In conclusion, the correct answer is C. UV radiations. UV radiation is a type of non-ionizing radiation that can cause damage to biological cells by exciting electrons to higher energy levels. This can lead to the formation of free radicals, which can damage DNA and other cellular components.