A nurse manager is preparing an educational session for nursing staff about how to provide cost-effective care. Which of the following methods should the nurse include in the teaching?

A is correct because delegating non-nursing tasks to ancillary staff allows nurses to focus on more complex and skilled tasks that require their expertise and judgment, thus improving efficiency and quality of care. B is incorrect because stocking client rooms with extra supplies increases waste and costs, as well as clutter and infection risk. C is incorrect because assigning dedicated equipment to each client's room reduces availability and accessibility of equipment for other clients, as well as increases maintenance and cleaning costs. D is incorrect because changing continuous IV infusion tubing every 24 hr is not cost-effective, as it does not reduce the risk of infection significantly compared to changing it every 72 hr, according to current evidence-based practice guidelines.