The correct option is C Botryoidal tissue
The parenchyma and connective tissues that invade the coelom of the leech body are called as botryoidal tissue. The botryoidal tissue layer is the innermost layer in the body wall of a leech. The oiutermost layer is called the cuticle followed by epidermis, dermis and muscular layer. The muscular layer consists of circular and longitudinal muscle cells which helps in the locomotion of the leech.