________ is the most effective therapy for stress management.​

A) ​Progressive muscle relaxation
B) ​Autogenics training
C) ​Cognitive behavioral therapy
D) ​Emotional disclosure

Cognitive behavioral therapy is considered the most effective therapy for stress management, as it focuses on changing negative thought patterns and behaviors that contribute to stress. It combines cognitive techniques (such as identifying and challenging negative thoughts) with behavioral techniques (such as relaxation exercises and time management strategies). The other options listed (progressive muscle relaxation, autogenics training, and emotional disclosure) can also be effective for managing stress, but may not be as comprehensive or individualized as cognitive behavioral therapy.