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What change in the skin is caused by exposure to the sun or ultraviolet light?

  1. Wrinkles

  2. Tan

  3. Dryness

  4. Burns

The correct answer is: Tan

The change in the skin caused by exposure to the sun or ultraviolet light is referred to as a tan. When skin is exposed to UV radiation, it triggers a response in the body to produce more melanin, the pigment responsible for the color of skin, hair, and eyes. This increase in melanin helps to protect the deeper layers of skin from damage caused by UV rays. As a result, the skin develops a darker color, commonly known as a tan. In contrast, while wrinkles, dryness, and burns can all be effects of sun exposure, they are not direct changes caused by the immediate reaction to the sun like tanning is. Wrinkles often develop over time as a result of cumulative UV exposure and the breakdown of collagen and elastin fibers in the skin, while dryness can occur due to various factors, including loss of moisture from prolonged exposure to the sun. Burns are acute responses to excessive sun exposure, which can cause visible damage but are not a healthy response like tanning.