Question

Some of the first organisms to show cephalization were _____.

Octopuses
Jellyfish
Flatworms
Sponges

Answer 1

octopus shows cephalization.it belogns to kingdom molluscs.
if it seems to be helpful mark me as brainliest

Answer 2

Some of the first organisms to show cephalization were the flatworms.  

Cephalization is a process through which the anterior end of an organism develops into a head. It is an evolutionary process that leads to the formation of the nervous system; the cephalization also defined the direction of moment of an organism.  

The Platyhelminthes (flatworms) have a very well defined nervous system and is cephalized to an extent having an eye spot behind the brain.