This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Health care of community & international health, Subject name: Social & Preventive Medicine
Training period of ASHA 
Select and explain. 
A. 13 days, B. 23 days, C. 33 days, D. 43 days
B: 23 days
Answer: B: 23 days 
Explanation: Ref:Park's Textbook of Preventive and Social Medicine 25th Ed