Home » The amount of urine output per day by a normal human being is Excretory System MCQs The amount of urine output per day by a normal human being is January 24, 2022 18 Views Q. The amount of urine output per day by a normal human being is A. 4-5 liters B. 3-4 liters C. 1-1.8 liters D. 5-0.75 liters Answer: 1-1.8 liters