When the bodies of organisms are made up of segments and the segments are similar to each other, then this type is known as metameric segmentation. Annelid exhibit metameric segmentation.Annelids are all bilaterally symmetrical animals. They are triploblastic meaning have three embryonic tissue layers as ectoderm, mesoderm and endoderm. Nearly all annelids have a fluid-filled cavity between the outer body wall and the gut and this is referred to as coelom and thus are coelomates.Therefore, the correct answer is option D.