I'll give you a question, please answer with step-by-step reasoning process.
What kind of animal doesn't have a respiratory or excretory system?\nOptions:\n- (A) a fish\n- (B) bears\n- (C) ant\n- (D) whale\n- (E) humans\n- (F) starfish\n- (G) mammals\n- (H) llama

(F)
Echinoderms lack respiratory and excretory systems.

Starfish and sea urchins are also echinoderms.

Starfish lack respiratory and excretory systems.

.

The final answer: (F)