The tone of the final paragraph can best be described as ______.

A．Who are some people who have had an important influence on the public health movement in the United States
B．What were some of the mental illnesses that were considered untreatable until the 1950s
C．What were some of the most important legal cases that contributed to the new concern for patients' rights
D．What were some of the new treatments for mental illness that were adopted in the 1950s

A．discuss the influence of Dorothea Dix on the mental health movement
B．shock the reader with vivid descriptions of asylums
C．increase public awareness of the plight of the mentally ill
D．provide a historical perspective on problems of mental health care