pick from the following. (A). humans. (B). blastoids. (C). bushes. (D). orchids. (E). Most plants. (F). ferns. (G). bacteria. (H). the Sun.
Q: You are presented with the quiz "What has a water vascular system with tube feet?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "echinoderms have a unique water vascular system with tube feet" and "echinoderms in the diorama include the crinoids and blastoids". So, what's the best answer to the question?
A:
(B).