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
Critical path is showm by 
Select and explain. 
A. Money, B. Man power, C. Time, D. Proper sequence
C: Time
Answer: C: Time 
Explanation: Ref:Park's Textbook of Preventive and Social Medicine 25th Ed