Choice A rationale:

Encouraging the client to express his feelings and concerns is a key intervention for someone diagnosed with adjustment disorder with depressed mood. This approach provides an outlet for the client to verbalize their emotions, which can help them process their thoughts and feelings. Through this expression, the client may gain insight into their emotional state and begin to develop healthier coping mechanisms.

Choice B rationale:

Advising the client to avoid contact with former coworkers is not an appropriate intervention. Social support is crucial during times of adjustment, and isolating oneself from supportive individuals can exacerbate feelings of depression and increase the risk of worsening mental health. Encouraging positive social interactions would be more beneficial.

Choice C rationale:

Suggesting the client take antidepressant medication for at least six months is not the primary intervention for adjustment disorder with depressed mood. Antidepressants are typically prescribed for major depressive disorder or other mood disorders. Adjustment disorder is usually managed through psychotherapy, counseling, and support rather than solely relying on medication.

Choice D rationale:

Teaching the client relaxation techniques such as deep breathing and progressive muscle relaxation is a valuable intervention, but it might not be the most effective as a standalone treatment for adjustment disorder with depressed mood. While relaxation techniques can help manage symptoms, addressing underlying emotional issues and facilitating emotional expression are more directly relevant to this disorder.