The correct option is C nucleases
Succus entericus is the alkaline secretion produced by glands in the wall of the duodenum. Succus entericus contain enzymes like disaccharidases (maltase, lactase, sucrase, invertase), dipeptidases, lipases, nucleosidases. Nucleases are found in the pancreatic juice.
The intestinal juice which is secreted by the epithelial lining of the small intestine is called succus entericus.
All the secretions from the different glands lining the walls of the small intestine form pale yellow secretions. It contains mucus which lubricates the epithelial structure.
The bicarbonate present in it increases the acidic pH to an alkaline level.
Lipase, maltase and nucleosidases are found in the succus entericus and secreted from the glandular cells of the small intestine. Lipase facilitates the digestion of lipid to fatty acids and glycerol. Maltase is responsible for converting maltose into glucose.
Nucleases which can digest the nucleic acid molecules are not found in the intestinal juice. This includes endonuclease and an exonuclease which are not found in the small intestine.
Nucleosidase helps in the digestion of nucleic acids. Hence, the correct answer is option (C).