Which option is a diuretic?

• A. Adenosine
• B. Amiodarone
• C. Atenolol
• D. Diuretics

Answer: (D)

Diuretics increase urine production to help remove excess fluid from the body. Among the options, the one that is a diuretic is the term that explicitly denotes this class. Adenosine is used to treat certain rapid heart rhythms by briefly slowing AV nodal conduction. Amiodarone is a broad antiarrhythmic used for various tachyarrhythmias. Atenolol is a beta-blocker used to lower heart rate and blood pressure. Because only diuretics are defined by their function of promoting diuresis, that option is the correct choice.