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': 'A systematic observation and recording of activities of one or more individuals at random interval is done in - \nSelect and explain. \nA. System analysis, B. Network analysis, C. Work sampling, D. Input-output analysis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: A network analysis is a graphical plan of all events and activities to be completed inorder to reach an end objective.It brings greater discipline in planning.Two common types of network techniques are PE CPM(refer pgno:872 park 23 rd edition)', 'role': 'assistant'}]