Explanation:
B
Earthworm belong to phylum annelida. Typhlosole is an internal fold of the dorsal wall in earthworm. In earthwarm, Typhlosole is present between the $26^{\text {th }}$ to last segment except the $23^{\text {rd }}-25^{\text {th }}$ segments from the last folded portion increases the surface area for the absorption of food in the intestine of earthworm. It has a tubular digestive system which includes the pharynx, oesophagus, crop intestine and gizzard that is used for crushing the food.