(A)Salivary glands are the glands that produce saliva.
(B)Lacrimal glands are the glands that produce tears.
(C)Sweat glands are the glands that produce sweat
mammary gland are the glands that produce milk, which is modified sweat gland.
(D)Sebaceous glands are the glands that produce sebum into the hair follicle.
So, the answer is 'Sweat gland'.