Furosemide is primarily used as a treatment for what condition?

Furosemide is primarily used for the treatment of hypertension and edema due to its classification as a loop diuretic. It works by inhibiting the reabsorption of sodium and chloride in the kidneys, leading to increased urine production. This diuretic effect helps in reducing fluid overload, which is often seen in conditions such as congestive heart failure, liver cirrhosis, and renal disease, as well as in managing high blood pressure.

The correct answer encompasses the dual role of furosemide in managing both hypertension and edema, making it a versatile medication in clinical settings where fluid management is crucial for patient health. Other conditions listed, such as hypothyroidism, type 2 diabetes, and acid reflux, do not directly benefit from the use of furosemide, showcasing why they are not relevant to its primary application.