Given the question: Fact 1: Echinoderms have a unique water vascular system with tube feet. Fact 2: Each starfish arm is lined with tube feet. Given the two facts above, answer the question "Where does a starfish have its water vascular system?" with the following options: - salt and water. - Chlorophyll - the environment - in its arms - on the rocks - in its eyes - Epidermis - in the ocean
The answer is:
in its arms