Fact 1: Adult echinoderms have radial symmetry.

Fact 2: All animals with radial symmetry live in water.

Given the two facts above, answer the question "Where do all adult echinoderms live?" with the following options: 
- soil
 - desert
 - freshwater
 - fossils
 - water
 - Earth
 - small
 - aquariums


 

     water    