A nurse assesses the client and determines the client is at risk for unstable blood glucose. Which activity best reflects the planning phase of the nursing process?

This action reflects the planning phase of the nursing process, where the nurse sets measurable and achievable goals based on the client's assessment data. Here’s how the other options fall into different phases: A. Demonstrating how to perform a blood glucose test = Implementation (teaching/intervention). C. Administering insulin = Implementation (carrying out an intervention). D. Checking blood glucose level = Assessment (gathering data).