Final answer:
The nurse should expect that the client in the action stage of health behavior change believes in the benefits of behavior change, is taking active steps towards it, and is receptive to suggestions. O The client believes that the advantages outweigh the disadvantages of behavior change.
Step-by-step explanation:
When assessing a client who has reached the action stage of health behavior change, the nurse should expect that the client believes that the advantages of behavior change significantly outweigh the disadvantages. At this stage, clients are typically engaged and ready to make changes to their behaviors.
Upon providing suggestions for change, the nurse may find that the client is already taking action towards new behaviors, rather than being prevented by previous habits or being defensive. It's important for healthcare professionals to support these clients by reinforcing their belief in the value of change and encouraging their commitment to continue with their new, healthier behaviors.