Final answer:
Diuretics work to lower blood pressure by decreasing blood volume, and one example of a diuretic is hydrochlorothiazide.
Step-by-step explanation:
Diuretics work to lower blood pressure by decreasing blood volume. They do this by increasing urine output, which leads to the loss of sodium and water from the body. One example of a diuretic is hydrochlorothiazide, which inhibits the reabsorption of sodium and chloride in the kidneys.