What has a special excretory structure?\nOptions:\n- (A) Silk plants.\n- (B) Insects.\n- (C) a fish\n- (D) animals\n- (E) plants\n- (F) Architecture structures.\n- (G) barnacles\n- (H) Corset structure.
Hmmm, let me think. I don't want to be wrong, so I got to be careful.
User
Some arthropods have special excretory structures. All insects are arthropods. Insects have special excretory structures. The answer: (B).
Assistant