Adult echinoderms have radial symmetry.
Starfish and sea urchins are also echinoderms.
Starfish have radial symmetry.
What has radial symmetry?
Options:
[A] Most plants
[B] an object
[C] barnacles
[D] Starfish
[E] Trees
[F] Cows
[G] a prism
[H] Coral