_ lack respiratory and excretory systems.\nOptions:\n- (A) graptolites\n- (B) insects\n- (C) ferns\n- (D) barnacles\n- (E) fossil fuels\n- (F) Allergies\n- (G) starfish\n- (H) parasites
Let's think step by step.
(G)
Echinoderms lack respiratory and excretory systems.

Echinoderms are represented by the starfish.

Starfish lack respiratory and excretory systems.

.

The answer is (G)