This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
Total body water differences between male and female is not seen at the age of 
Select and explain. 
A. Above 60 years, B. 40-60 years, C. 10-18 years, D. 18-25 years
D: 18-25 years
Answer: D: 18-25 years 
Explanation: By weight, the average human adult male is approximately60% water and the average adult female is approximately 55%. ... Most of animal body water is contained in various body fluids. These include intracellular fluid; extracellular fluid; plasma; interstitial fluid; and transcellular fluid 45,46,47