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
The major purpose of Randomization in clinical trials is to - 
Select and explain. 
A. Facilitate double blinding, B. Help ensure that the study subjects are representative of general population, C. Ensure that the groups are comparable on baseline characteristics, D. Reduce selection bias in allocation of treatment
D: Reduce selection bias in allocation of treatment
Answer: D: Reduce selection bias in allocation of treatment 
Explanation: Ans. is 'd' i.e., Reduce selection bias in allocation of treatment