Final answer:
Role-based access is the best way to provide uniform access to patient information for all nursing staff.
Step-by-step explanation:
The correct answer is d. Role-based access. Role-based access refers to providing different levels of access to patient information based on the role or job function of each nursing staff member. In this system, each staff member is assigned a specific role, such as nurse, doctor, or administrator, and only has access to the information necessary to perform their job duties.