Question

these sudoriferous glands begin to function at puberty. eccrine glands apocrine glands sebaceous glands mammary glands ceruminous glands

Explanation:

Eccrine glands are active from birth, apocrine glands begin to function at puberty. Sebaceous glands produce sebum and are not sudoriferous (sweat - producing). Mammary glands are for milk - production and ceruminous glands produce earwax. Apocrine glands are a type of sudoriferous gland that start functioning at puberty.

Answer:

apocrine glands