This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Water content in infant 
Select and explain. 
A. 60-70 %, B. 75-80 %, C. 80-90 %, D. > 90%
B: 75-80 %
Answer: B: 75-80 % 
Explanation: Ans. is 'b' i.e., 75-80% Schwaz writes - "the highest percentage of Total Body Water is found in newborns, with approximately 80% of their total body weight comrpised of water. This decreases to about 65% by 1 year of age and therafter remains fairly constant through childhood".