What is the Central Control Organ of a Nervous System

Question

What is the central control organ of a nervous system?  
A) Notochord
B) Brain
C) Nerve cord
D) Ganglia
E) Nerve

Accepted Answer

The brain is the central control organ of a nervous system. It receives and processes sensory information and coordinates the body's responses. The other options are all parts of the nervous system, but not the central control organ. The notochord is a flexible rod that provides support in some animals. The nerve cord is a bundle of nerve fibers that runs along the length of an animal's body. Ganglia are clusters of nerve cell bodies that function as simple processing centers in some invertebrates. Nerves are bundles of nerve fibers that transmit information between the brain and other parts of the body.