Question

the reason that the nail bed appears pink is the presence of a large number of ____ in the underlying dermis. melanocytes keratinocytes blood vessels carotene

Explanation:

Melanocytes produce melanin and are related to skin color - not the pink color of nail beds. Keratinocytes produce keratin and are not responsible for the pink color. Carotene can give a yellow - orange hue. Blood vessels in the dermis beneath the nail bed give it a pink appearance due to the presence of blood.

Answer:

C. blood vessels