You are presented with the question "what lives in water?" and the following answer choices: 
- adult echinoderms
 - fur seals
 - tortoises
 - the sun
 - crocodiles
 - fisherman
 - humans
 - salamanders

Now knowing that adult echinoderms have radial symmetry and all animals with radial symmetry live in water, choose the best answer.


 

 adult echinoderms        