The correct answer is (A) A shellfish, which has a soft unsegmented body and, usually, a protective shell. Any invertebrate of the phylum Mollusca, including chitons, limpets, snails, mussels, oysters, clams, squids, octopuses, etc. Also spelled Mollusc,

Mollusk comes from Latin mollis (soft).

Examples of use:

• The restaurants at Cape Anne offer a variety of mollusks on their menus.
• Mollusks can often be purchased on the dock directly from the fishermen.