Q: What kind of animals has a water vascular system with tubed feet?\nOptions:\n- (A) animals\n- (B) starfish\n- (C) reeds\n- (D) insects\n- (E) warm-blooded\n- (F) sponges\n- (G) sea coral\n- (H) four limbs
Let's think step by step below.

User
Echinoderms have a unique water vascular system with tube feet. Echinoderms are represented by the starfish. Starfish have a unique water vascular system with tube feet.
Thus, the answer is (B).
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