Respuesta :
Fish is your answer because the other organisms don't exactly have brains. Hope this helps :P
B. Fish
While the flatworm was something sorta resembling a brain, it is not considered a central brain.
And hydra & sponges have no brains
While the flatworm was something sorta resembling a brain, it is not considered a central brain.
And hydra & sponges have no brains