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
Time takan for any project is estimated by - 
Select and explain. 
A. Work sampling, B. Input\/output analmysis, C. Network analysis, D. System analysis
C: Network analysis
Answer: C: Network analysis 
Explanation: The essence of PE is to construct an Arrow Diagram. The diagram represents the logical sequence in which events must take place.It is possible with such a diagram to calculate the time by which each activity must be completed and to identify those activities that are critical (refer pgno:872 park 23 rd edition)