Which of the following statements is true about UV radiation and skin health?

• A. UVA is linked to tanning but not sunburn
• B. UVC is the sunburn-causing type
• C. UVB is associated with sunburn and skin cancer
• D. UV radiation does not affect skin health

Answer: (C)

UVB rays have the strongest link to sunburn and skin cancer because they directly damage the DNA in skin cells on the surface of the skin. This direct damage triggers inflammation that we feel as sunburn, and the cumulative DNA damage over time increases the risk of skin cancers. UVA rays penetrate deeper and contribute to tanning and photoaging, but they are not the primary cause of sunburn. UVC is largely blocked by the atmosphere and isn’t a factor in everyday sun exposure. So the statement that UVB is associated with sunburn and skin cancer is the accurate one.