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
Step-by-step reasoning process below:
(C)
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.

.

The answer is (C)