2. Which group of animals have five pairs of legs for swimming and walking?a. Arthropodsb. Crustaceansc. Nematodesd. Platyhelminthes3. Which group of invertebrates have shells?a. Coelenteratesb. Echinodermsc. Mollusksd. Sponges4. Which group of animals have soft bodies, tentacles, and feet?a. Sea stars,sponges worms sea urchinsb. Sea cucumbers,coral,spiders,slugsc. Snails,mussels,slugs,and claimsd. Jellyfishes,prawns,crabs,mussels​.