This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
Midyear population is considered as that on 
Select and explain. 
A. 1st June, B. 30th June, C. 1st July, D. 15th July
C: 1st July
Answer: C: 1st July 
Explanation: The mid-year population is used to calculate bih and death rates. The mid-point refers to the population estimated as on first of July of a year.Park 23e pg: 55