Which of the following can help in achieving rate control in patients with atrial fibrillation?

Digoxin is a medication that can be particularly effective in controlling the heart rate in patients with atrial fibrillation, especially in individuals who also have heart failure or are sedentary. It works by increasing the force of contraction of the heart and also slows down the conduction through the atrioventricular (AV) node. This dual action helps to decrease the heart rate during atrial fibrillation, allowing for better overall heart function and reducing symptoms.

Other options, such as insulin, antibiotics, and statins, do not share this direct influence on heart rate control. Insulin is primarily used to manage blood glucose levels in diabetes, antibiotics target bacterial infections, and statins are used to manage cholesterol levels and reduce cardiovascular risk. Therefore, digoxin stands out as the appropriate choice for achieving rate control in atrial fibrillation.