This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
[{'content': 'Which among the following is true about Monitoring? \nSelect and explain. \nA. Broader concept, B. Analysis of measurement for detecting changes in health status, C. Feedback is done, D. Detects missed out cases', 'role': 'user'}, {'content': "Answer: B \nExplanation: Monitoring is the performance and analysis of routine measurements aimed at detecting changes in the environment or health status of the population. It is a narrow concept. No action and feedback done. Ref: Park's Textbook of Preventive and Social Medicine; 24th edition - Page no. 44", 'role': 'assistant'}]