Read the text and answer the multiple choice question by selecting the correct response. Only one response is correct.
The experience of sunburn can be a very efficient (i.e. painful) reminder to heed adequate protection on future occasions. However more importantly, it should be a reminder of the long-term effects of sun exposure on our bodies and health – which can include aging of the skin and skin cancer.
Sunburn results when the amount of exposure to the sun, or other ultraviolet light source (e.g. tanning lamps and welding arcs etc.), exceeds the ability of the body’s protective pigment, melanin, to protect the skin. Melanin content varies greatly, but in general darker skinned people have more melanin than lighter skinned. (Although fairer skinned people are generally more prone to getting sunburn than darker skinned people, this certainly does not exclude the latter from risk.)
Sunburn destroys cells in the outer layer of the skin, damaging tiny blood vessels underneath. Burns deeper into the skin’s layers also damage elastic fibers in the skin, which over time and with repeated sun overexposure, can result in the appearance of yellowish, wrinkled skin.
What kind of Melanin do darker people have?
D. Both B and C