Final answer:
The client is most likely in the contemplation stage of change, considering becoming more physically active but hesitating due to perceived barriers, and has not yet started exercising. So the correct answer is option (B).
Step-by-step explanation:
The client described in the question is most likely in the Contemplation stage of change. This stage is characterized by individuals who are considering the change but have not yet made a commitment to start. They often acknowledge the benefits of changing their behavior but are also acutely aware of the challenges and barriers that prevent them from taking action.
The client in question is clearly thinking about becoming more physically active but is encountering barriers that prevent him from starting an exercise regimen. In this stage, it's common for individuals to go back and forth on their decision, as they are weighing the pros and cons of the change they are contemplating. Unlike the Pre-contemplation stage, where individuals do not even consider change, and the Preparation stage, where one is making plans to start soon, the client is still deciding whether to take action.
He has not moved to the Action stage because he has not initiated any regular physical activity. To progress, the coaching sessions could involve strategies to overcome the perceived barriers and to enhance the client's confidence in his ability to make the desired changes.