Final answer:
The best example of a pediatric unit's organizational culture is the use of the primary nursing model for care.
Step-by-step explanation:
The best example of a pediatric unit's organizational culture would be option 4, where the primary nursing model is used for care. The primary nursing model emphasizes continuity of care, with each patient being assigned to a primary nurse who takes responsibility for their care throughout their hospital stay. This model creates a sense of familiarity and consistency for patients and their families, which is beneficial in a pediatric setting.