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: Social & Preventive Medicine
Criteria for wholesome water? 
Select and explain. 
A. Free from pathogenic organisms, B. Should be colourless, C. Should be free of chlorine, D. Should be clear
A: Free from pathogenic organisms
Answer: A: Free from pathogenic organisms 
Explanation: Ans. is 'a' i.e., Free from pathogenic organisms