The correct option is C Bombyx, Pleurobrachia, Culex, Locusta
The image shown represents a coelomate organism. The body cavity, which is lined by mesoderm is called coelom. Animals
possessing coelom are called coelomates.
Arthropods are coelomates. For example: Bombyx, culex and Locusta. Pleurobrachia is a member of the phylum ctenophora and it is an acoelomates animal.
All others have more than one exception.