Most invertebrates have a more complex nervous system.
Cephalopods have the most advanced nervous systems of all invertebrates.
Cephalopods have a complex nervous system.
What has a complex nervous system?

[1] insects
[2] Airplanes
[3] Rocks
[4] elephants
[5] humans
[6] animals
[7] h2o
[8] Cephalopods