This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'The major purpose of randomization in a clinical trial is to \nSelect and explain. \nA. Facilitates double blinding, B. Reduce selection bias in allocation to treatment, C. Ensure the groups are comparable on base line characteristics, D. Help ensure the study objects are representative of general population', 'role': 'user'}, {'content': 'Answer: B \nExplanation: .Randomization is an attempt to eliminate bias and allow for comparability. It ensures that the investigator has no control over the allocation of paicipants to either study or control group.Park 23e pg: 82', 'role': 'assistant'}]