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
[{'content': 'Validity of a test is based upon all except - \nSelect and explain. \nA. Sensitivity, B. Specificity, C. Precision, D. Accuracy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: → Precision stands for repeatability (not validity).', 'role': 'assistant'}]