Final answer:
The best assessment for hypokalemia in a patient receiving chlorothiazide (Diuril) would include muscle weakness or cramps.
Step-by-step explanation:
The best assessment for hypokalemia (low potassium levels) in a patient receiving chlorothiazide (Diuril) would include muscle weakness or cramps. Hypokalemia is a potential side effect of chlorothiazide, which is a diuretic that increases the excretion of potassium in the urine. This can lead to low potassium levels in the blood, resulting in symptoms such as muscle weakness or cramps.