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': 'PERT type of system is used for – \nSelect and explain. \nA. Cost effective analysis, B. Cost benefit analysis, C. Network analysis, D. Input-Output analysis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Network analysis\n\nA network analysis is a graphic of all events and activities to be completed in order to reach an end objective.\nIt brings greater discipline in planning.\nThe two common types of network technique are :\n\n\nProgramme Evaluation and Review technique (PERT)\nCritical Path method (CPM)', 'role': 'assistant'}]