Lasix (furosemide) is indicated for which of the following?

Lasix (furosemide) is primarily used as a diuretic, meaning it helps the body eliminate excess fluid by increasing urine production. This property is particularly beneficial for managing conditions associated with fluid overload, such as edema, which can occur in heart failure, liver cirrhosis, or kidney disease. Additionally, Lasix is effective in lowering blood pressure in patients with hypertension by reducing blood volume, which helps to decrease the workload on the heart and lower systemic vascular resistance.

The other options do not align with the primary uses of Lasix. Heart failure is indeed treated with Lasix, but it is more specifically a symptom of fluid overload rather than a direct use. Diabetes, kidney stones, migraines, allergic reactions, and fever do not fall under the therapeutic indications for furosemide. Therefore, the best choice that encapsulates the primary indications for use of Lasix is edema and hypertension.