A home health nurse is making an initial assessment visit to an adult client who has type 1 diabetes mellitus. Which of the following statements should the nurse make to evaluate the client's ability to measure blood glucose accurately?

A. "Please use your glucometer and show me the results.": Asking the client to demonstrate their technique provides the nurse with direct observation of how the client performs the skill. This allows the nurse to assess for errors in preparation, technique, or interpretation and ensures the client can perform self-monitoring correctly in their own home environment. B. "Please tell me how long you have been using this glucometer.": Knowing the duration of glucometer use may provide some background information, but it does not show whether the client has the correct technique. C. "These blood glucose results you've written down do not seem correct.": Telling the client their documented results seem wrong may come across as judgmental and could discourage openness. It also does not provide a clear assessment of the client’s ability to use the glucometer properly. D. "Let me show you how to use this glucometer, so you can see if this is how you've been using it.": Demonstrating the procedure yourself first may help teach, but it does not initially allow the nurse to evaluate how the client is actually performing the task.