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': 'The most important function of sentinel surveillance is \nSelect and explain. \nA. To determine the trend of disease in a population, B. To notify disease, C. To find the total amount of disease in a population, D. To plan effective control measures', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Sentinel Surveillance\n\nIt estimates disease prevalence in a population.\nIt is\xa0a method for identifying the missing cases and thereby supplementing the notified cases.', 'role': 'assistant'}]