Why does hair turn white or gray with age?
A) The hair is no longer producing carotene.
B) The keratinocytes have been damaged.
C) Sebaceous gland activity increases, making the hair well lubricated during growth and turning it white or gray.
D) The epidermis is dividing faster, making the hair white or gray.
E) The melanocyte activity declines, making the hair white or gray.
Answer: E
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