Eskimos wear a great deal of clothing and have limited exposure to U.V. light, but do not suffer from vitamin D deficiency. A possible explanation is,
A. their exposure to U.V. light in the summer will last for a year.
B. they do not need vitamin D.
C. their bodies produce vitamin D another way.
D. they get enough vitamin D in their diet of fish and marine mammals.
E. they do not require sunlight for vitamin D formation.
D
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