Final answer:
Dialectical behavior therapy (DBT) is a form of cognitive-behavioral treatment that is useful for people with borderline personality disorder.
Step-by-step explanation:
The correct answer is b) Dialectical behavior therapy (DBT). DBT is a form of cognitive-behavioral treatment that has been found to be effective for individuals with borderline personality disorder (BPD). It focuses on helping individuals regulate their emotions, improve interpersonal relationships, and develop healthy coping skills. Medication, psychodynamic therapy, and electroconvulsive therapy are not considered as the primary treatment options for BPD.