Adult echinoderms have radial symmetry, and all echinoderms are deuterostomes . Given these facts, what have radial symmetry among the following options:
- deuterostomes
 - Veins and arteries.
 - barnacles
 - alpacas
 - solid, liquid, gas
 - sensory neurons
 - gastropod shells
 - graptolites


 

 deuterostomes        