Wharton's duct is associated with
(a) sub-lingual salivary duct
(b) parotid salivary duct
(c) sub-maxillary salivary gland
(d) Brunner's glands
(c) Wharton's duct is associated with sub-maxillary salivary gland. These lie beneath the jaw angles, their secretion is carried by sub-maxillary or Wharton's duct which opens below the tongue. These are compound acinar glands.