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: Dental
[{'content': 'All are examples of Independent variables except: \nSelect and explain. \nA. Cause, B. Predisposing factors, C. Risk factor, D. Outcome', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Variables:\nIndependent variable\n\nEg:\xa0Cause, predisposing factor, risk factor\nCan be manipulated\n\nDependent variable\n\nEg: Outcome, result, effect\nCannot be controlled or manipulated', 'role': 'assistant'}]