Let's think step by step! Some invertebrates may have which feature?\nOptions:\n- (A) invertebrate\n- (B) fat\n- (C) gills\n- (D) exception\n- (E) three\n- (F) mollusk\n- (G) complex\n- (H) shell
The thinking starts now:
User
Most mollusks have shells. Mollusks are invertebrates and are no exception. Some invertebrates have shells. The final answer: (H).
Assistant