The correct option is B A- 3, B- 4, C- 1, D- 2
A polyp is cylindrical in shape and elongated at the axis of the vase-shaped body and is found in the phylum Cnidaria.
Acoelomates lack a coelom and include flatworms and tapeworms, exhibit bilateral symmetry and have no body cavity.
Pseudocoelomate have a fluid-filled body cavity but is not lined by an epithelium.
Hemocoel contains blood or hemolymph and functions as a part of circulatory system.
Therefore, the correct answer is option C.