Final answer:
A person must excrete a minimum of around 500 ml of urine per day for the removal of metabolic wastes and proper bodily functions, with normal urine output ranging from 600 ml to 2500 ml per day.
Step-by-step explanation:
The average volume of urine excreted per day by an adult is typically around 1.5 liters. However, the range of normal urine output can vary from 600 ml to 2500 ml per day, with an average being around 1500 ml/day. The kidneys play a crucial role in regulating water output and need to produce a minimum volume of about 500 ml/day to effectively remove metabolic wastes from the body. Below this level, the condition is known as oliguria, and the complete absence of urine production is referred to as anuria. The normal functioning of the body requires at least 0.47 liters (0.5 quarts) of urine output per day to prevent the build-up of wastes and potential impairment of organ function.