Final answer:
The priority expected outcome of the nursing committee's work is the change leading to improved client care on the unit.
Step-by-step explanation:
The priority expected outcome of the nursing committee's work in planning a change in the units organization is option 4: The change will lead to improved client care on the unit. This means that the main goal of the change is to enhance the quality of care provided to the clients in the unit. The change agents are focused on making improvements in client care and ensuring that the nursing practice on the unit is guided by the change.