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Question
Which of the following is a feature of vitamin D synthesis?
a.Tanning lamps and tanning booths do not stimulate vitamin D synthesis.
b.Sunscreens with sunburn protection factors of 2 and above prevent synthesis of vitamin D.
c.The ultraviolet rays of the sun are able to easily pierce heavy clouds and smog to promote vitamin D synthesis.
d.Dark-skinned people require longer sunlight exposure than light-skinned people to synthesize equivalent amounts of vitamin D
e.The risks of skin cancer often outweigh the benefits of sun exposure for very light-skinned people.
Answer
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