Which is NOT an important principle of the study devoted to the biological bases of behavior ?

Which is NOT an important principle of the study devoted to the biological bases of behavior (behavioral neuroscience, psychobiology, physiological psychology):

A ) The Nervous System controls and responds to body functions and directs behavior
B ) Nervous System structure and function are determined by both genes and environment throughout life
C ) Every behavior can be explained solely by reference to the brain
D ) The brain Is the foundation of the mind making learning, memory, language and other processes possible
E ) Research leads to understanding that is essential for development of therapies for Nervous System disorders