Before the 1950s, almost all outpatient care for psychological disturbances took the form of:

A) hospitalization.
B) private psychotherapy.
C) treatment at community mental health centers.
D) treatment by social services agencies.

Before the 1950s, outpatient care for psychological disturbances was predominantly in the form of private psychotherapy. This was due to the limited availability of community mental health centers and social services agencies for such purposes at the time, and hospitalization was more common for severe cases requiring inpatient care.