Question

question 3
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which accessory skin structure keeps the skin lubricated and waterproof?
sebaceous gland
eccrine sweat gland
endocrine gland
apocrine sweat gland

Explanation:

Sebaceous glands secrete sebum. Sebum lubricates the skin and hair. It also helps in making the skin waterproof. Eccrine sweat glands produce sweat mainly for thermoregulation. Endocrine glands secrete hormones into the bloodstream. Apocrine sweat glands secrete a thicker fluid, often related to body odor.

Answer:

Sebaceous Gland