What is the total composition of water in urine?

The total composition of water in urine is approximately 95%. This high water content is significant as it serves several critical functions in the body. The kidneys filter blood, and during this process, they produce urine, primarily made up of water, which helps in the regulation of body fluids, electrolytes, and waste products.

The remaining percentage of urine consists of various solutes, including urea, creatinine, electrolytes, and other metabolic waste products. The exact concentration can vary based on factors such as hydration levels, diet, and overall health, but the typical range for water in urine is around 90-95%.

Understanding that urine is predominantly water helps healthcare professionals assess hydration status and kidney function through urine analysis. The 95% figure reflects a well-accepted norm in both clinical practice and academic studies, making it the most accurate choice among the provided options.