This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography and family planning, Subject name: Social & Preventive Medicine
Demographic Gap attains its maximum limit in 
Select and explain. 
A. Early stage I, B. Late stage II, C. Late stage III, D. Early stage IV
B: Late stage II
Answer: B: Late stage II 
Explanation: Demographic cycle Demographic cycle is closely related to : Socio-economic progress of a country There are 5 stages (Phases) of demographic cycle through which a nation passes Stages Phases CBR CDR Stage I High Stationary High high Stage II Early expanding High Stas declining Stage III Late expanding Stas declining Continue declining Stage IV Low Stationary Low Low Stage V Declining CDR > CBR Demographic cycle is based on : Demographic gap DG = Crude Bih Rate (CBR) - Crude death rate DG stas increasing : Early stage II (Early expanding phase) DG is Maximum : Late stage II (Early expanding phase) DG stas declining : Early stage III (Late expanding PHASE) DG is negative : Stage V (Declining phase) DG is Narrow : Stage I (high Stationary) ; Stage IV (Low Stationary) Ref: Foundations of community Medicine, GM Dhaarb& I Robbani, 1st edition Park 25th edition Pgno : 530