A nurse is caring for a client who has atrial fibrillation and receives digoxin daily. Before administering this medication, which of the following actions should the nurse take?

A. While blood pressure is important to monitor, measuring the apical pulse is more critical before administering digoxin, as it directly affects heart rate. B. Weighing the client is not specifically necessary prior to administering digoxin, unless there is a concern about fluid retention. C. Offering a snack is not relevant before administering digoxin, unless the client is experiencing hypoglycemia or nausea. D. The nurse must measure the client's apical pulse before giving digoxin. If the pulse is below 60 beats per minute, the nurse should hold the medication and notify the healthcare provider, as digoxin can further decrease heart rate.