3. Which statement about the brain is false?
a. It is the most complex organ in the body.
b. It is the largest organ in the body.
c. It consists of billions of neurons.
d. It serves as the control center of the body.

The brain and the spinal cord are components of the peripheral nervous system.  

I hope this helps

an interest group is an organization whose members share common concerns, and try to influence government policies that impact those concerns. elected officials frequently complain about the influence of "special interests" on american politics.