The correct answer is C
Pseudocoelomates have a body cavity, the pseudocoel, between the endoderm and the mesoderm. Coelomates have a body cavity, the coelom, that develops entirely within the mesoderm, and so is lined on both sides by mesoderm tissue.
The cavity that develops entirely from the mesoderm is coelom.
Mesoderm is the germ layer that arises during gastrulation. it is present between the endoderm and the ectoderm.
Coelom is the principal body cavity in most animals, located between the intestinal canal and the body wall.
To know more about coelom here
https://brainly.com/question/21738187
#SPJ2
