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': 'Confounding factor can be eliminated by- \nSelect and explain. \nA. Correlation, B. Standardization, C. Randomization, D. Matching', 'role': 'user'}, {'content': 'Answer: D \nExplanation: . a "confounding factor"is defines as one which is associated both with exposure and disease and is distributed unequally in study and control groups.a cofounding factor by itself is a risk factor for the disease independently of any association.which can be eliminated mainly by matching. ref:park&;s textbook,ed22,pg no 63', 'role': 'assistant'}]