The members of the phylum Annelida are also known as ringed worms or segmented worms, that have multiple segments (what we see externally as rings), a circulatory system, and a rounded shape.
Ragworms, earthworms, and leeches are annelids but tapeworms ARE NOT annelids (option D), which are part of the phylum Platyhelminthes and are not segmented and don't have a circulatory system.