Final answer:
The correct option is c. Humanistic therapy focuses on personal growth and self-acceptance, encouraging the patient to explore their thoughts, feelings, and experiences.
Step-by-step explanation:
The type of treatment described, where the therapist asks the patient to understand their own past, accept it as a part of them, and feel gratitude toward others, is known as Humanistic therapy. Humanistic therapy emphasizes an individual's capacity for personal growth and self-acceptance.
It focuses on helping clients develop self-awareness, self-acceptance, and personal responsibility for their own lives. The therapist in this type of therapy acts as a supportive facilitator, encouraging the patient to explore their thoughts, feelings, and experiences.