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 type of nervous system do Cephalopods have?" with the following options: 
- organ
 - automatic
 - nerves
 - sensory
 - three
 - sweating
 - complex
 - brain


 

       complex  