Concept:Snails are classified under a specific animal phylum based on their body features.Explanation:Snails have soft bodies, a muscular foot, and often a coiled shell.They belong to the Class Gastropoda.Gastropoda is a major class within the phylum Mollusca.Therefore, snails are molluscs, not annelids, echinoderms, or nematodes.Answer:B. Mollusca