Final answer:
The primary role of a therapist in CBT is to assist clients in identifying and changing negative thought patterns, which is essential in treating emotional and mental health issues.
Step-by-step explanation:
The main role of a therapist in Cognitive Behavioral Therapy (CBT) is d) Assisting clients in identifying and changing negative thought patterns. CBT is based on the concept that our thoughts, feelings, and behaviors are interconnected, and that changing negative thought patterns can lead to changes in feelings and behaviors. Therapists use CBT to help clients challenge and overcome automatic negative thoughts that can contribute to emotional difficulties and mental health disorders. By working with clients to identify these thoughts, therapists encourage the development of more balanced and constructive ways of thinking. This, in turn, can improve overall mental health and solve specific psychological problems.