Which of the following is an example of an open-ended question?

An open-ended question is designed to encourage a more detailed and expansive response rather than a simple "yes" or "no" answer. In the provided example, asking "How do you use this medication?" invites the patient to share their experience, methods, and details regarding medication administration. This allows the healthcare provider to gain deeper insights into the patient's understanding and adherence to their treatment regimen.

In contrast, the other options restrict the patient’s response options. For instance, the first and fourth questions elicit affirmative or negative responses, while the second seeks a numerical answer regarding frequency, limiting the depth and breadth of the patient’s feedback. Open-ended questions are particularly valuable in Medication Therapy Management because they can uncover patient-specific issues or concerns that may otherwise remain undisclosed.