The correct option is B Salivary glands
The pharynx of the earthworm is with a narrow and dorsoventrally compressed but laterally expanded pharyngeal cavity. It is due to presence of a pharyngeal mass on its dorsal side. This pharyngeal mass consists of chromophil cells which are saliva-secreting cells. These cells secrete salivary-secretion, containing mucus and proteolytic enzymes, that are poured into the salivary chamber.
Therefore, the correct answer is option B.