Final answer:
Furosemide, or Lasix, is the diuretic among the listed medications, and it is commonly used to treat hypertension by increasing urine output and reducing fluid volume.
Step-by-step explanation:
Among the medications listed, C. Furosemide is a diuretic. Diuretics are compounds that increase urine output, and in the case of furosemide, it work by inhibiting the reabsorption of sodium (Na+) and chloride (Cl-) ions in the ascending limb of the loop of Henle in the kidney. This effect decreases water conservation by the body and is often used to treat conditions such as hypertension, congestive heart failure, and fluid retention. Furosemide, also known by its brand name Lasix, is particularly effective as a loop diuretic, targeting a specific part of the nephron for a pronounced diuresis.