A nurse is preparing a presentation for a local community group about mental disorders and plans to ...

A nurse is preparing a presentation for a local community group about mental disorders and plans to include how mental disorders are different from medical disorders. Which statement would be most appropriate for the nurse to include?
 
  A) Mental disorders are defined by an underlying biological pathology.
  B) Numerous laboratory tests are used to aid in the diagnosis of mental disorders.
  C) Clusters of behaviors, thoughts, and feelings characterize mental disorders.
  D) Manifestations of mental disorders are within normal, expected parameters.