The correct option is A Taenia solium
In Taenia solium both self-fertilization and cross-fertilization occur. In self-fertilization, sperms produced in proglottid fertilize the ova produced in the same proglottid. In cross-fertilization, sperms produced in a proglottid fertilize ova produced in another mature proglottid of the same worm. In paragonimus and dugesia self-fertilization is absent.