Final answer:
The nurse must consider that the client's behavior would respond to psychoeducational strategies.
Step-by-step explanation:
The client's behavior in this case of somatoform disorder is not controlled by their subconscious mind, manipulative to avoid work responsibilities, or modifiable through reality therapy. Instead, the nurse must consider that the client's behavior would respond to psychoeducational strategies. Psychoeducational strategies involve providing the client with information and education about their symptoms, helping them understand the psychological factors contributing to their condition, and teaching them coping skills to manage their symptoms.