You are presented with the question "a connection is between the eye and what type of  feet in echinoderms" and the following answer choices: 
- tube
 - Seesaw
 - vision
 - made
 - voles
 - a path
 - bones
 - muscle

Now knowing that echinoderms have a unique water vascular system with tube feet and another obvious connection between the eye and the rest of the body is the vascular system, choose the best answer.


 

 tube        