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: Physiology
Under physiological conditions heat acclimatization is accomplished by all except 
Select and explain. 
A. Decreased renal blood flow, B. Increased urine sodium, C. Increased aldosterone secretion, D. Excessive sweating
B: Increased urine sodium
Answer: B: Increased urine sodium 
Explanation: During heat acclimatization, body tries to conserve the fluids and Na+. So the Na+ content in urine is low.