<prompt> In the demographic study of population, a country with low bih rate a low death rate is in following phase1st phase2nd phase3rd phase4th phase  <response>: Fouh stage of demographic cycle is low stationary Characterised by a low bih and low death rate with the result that the population becomes stationary Reference: Park;s textbook of preventive and social medicine, 23rd edition, Page no: 479 