Fact 1: Most invertebrates have a more complex nervous system.

Fact 2: Cephalopods have the most advanced nervous systems of all invertebrates.

Given the two facts above, answer the question "What has a complex nervous system?" with the following options: 
- insects
 - Airplanes
 - Rocks
 - elephants
 - humans
 - animals
 - h2o
 - Cephalopods


 

        Cephalopods 