Given the question: You are presented with the question "What has a water vascular system with tube feet?" and the following answer choices: - humans - blastoids - bushes - orchids - Most plants - ferns - bacteria - the Sun Now knowing that echinoderms have a unique water vascular system with tube feet and echinoderms in the diorama include the crinoids and blastoids, choose the best answer.
The answer is:
blastoids