This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Health education & planning, Subject name: Social & Preventive Medicine
[{'content': 'The critical path (CPM) method in health planning and management is - \nSelect and explain. \nA. The shoest time taken to complete the project, B. The midpoint for review of the project, C. The longest path taken to complete the project, D. Concerned with queuing theory', 'role': 'user'}, {'content': "Answer: C \nExplanation: - Critical path method : the longest path of the network. - if any activity along the critical path is delayed, the whole project will be delayed. Reference : Park's textbook of preventive and social medicine, 23rd edition, pg no:872 <\\p>", 'role': 'assistant'}]