Final answer:
The best interpretation of the nurse's behavior in buying a new doll for a hospitalized child is that she wants to make the child happy, indicating her empathy and desire to alleviate distress.
Step-by-step explanation:
When considering the nurse's behavior in buying a new doll for a child who broke hers during hospitalization, the best interpretation would likely be d. the nurse wants to make the child happy. This act demonstrates professional kindness and empathy towards a young patient experiencing distress in a hospital environment. It portrays the nurse's understanding of the emotional needs of a child and represents an effort to mitigate the stress of hospitalization by providing comfort. While options a, b, and c could be considered, option d is focused on the immediate welfare of the child rather than speculating the nurse's personal feelings or professional boundaries.