Answer:
1. The answer is A) number of symptoms needed for diagnosis from each cluster.
2. The answer is C) Prolonged exposure.
3. The answer is D) Inpatient psychiatric unit.
4. The answer is B) They experience more frequent hospitalizations and relapses.
5. The answer is D) Self-medication model.
6. The answer is A) Clinicians and researchers had tremendous difficulty in making consistent and accurate diagnoses of mental disorders with unstructured clinical interviews.