Question to you: What is an example of an echinoderm?\nOptions:\n- (A) a fish\n- (B) eel\n- (C) starfish\n- (D) parasites\n- (E) ferns\n- (F) shark\n- (G) fertile\n- (H) algae.
Let's reason step-by-step:
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Echinoderms have a unique water vascular system with tube feet. Each starfish arm is lined with tube feet. Starfish are an echinoderm with a unique water vascular system. Final answer: (C).
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