Research Has Shown Which of the Following Statements Is TRUE

Research has shown which of the following statements is TRUE?

A) Spontaneous remission was the main reason that traditional psychoanalysis worked with a majority of patients.
B) Problems, such as hyperactivity and anxiety, require extensive treatment and do not improve because of a passage of time.
C) Psychoanalysis has been shown to produce improvement in a majority of patients.
D) Brief psychodynamic therapies, such as interpersonal psychotherapy (IPT) have been shown to be effective with children and young adolescents, but not with adults.