Final answer:
The counselor should discuss the client's concerns and make necessary changes in treatment goals.
Step-by-step explanation:
The counselor should discuss the client's concerns and make necessary changes in treatment goals (option d). This is important because it allows the counselor to address the client's unhappiness and work towards a more effective treatment plan. By openly communicating and being responsive to the client's feedback, the counselor can better meet the client's needs.