Correct Answer: Platyhelminthes

Solution : The correct answer is Platyhelminthes.

The group of Kingdom Animalia with unsegmented, bilaterally symmetrical, soft bodies, with a triploblastic construction and a lacking coelom, skeleton and anus is the phylum Platyhelminthes, also known as flatworms. Flatworms are a different group of about 25,000 species found in freshwater, marine, and land settings. They are normally tiny, ranging in length from a few millimetres to several metres.