Which of the following values indicates that each woman is being replaced by one daughter, leading to a stable population over time?

Correct option is B

Correct Option: (B) NRR = 1
Explanation:
The Net Reproduction Rate (NRR) measures the average number of daughters that would be born to a cohort of women during their lifetime, taking into account both current fertility rates and mortality rates.
If NRR = 1, each woman is replaced by exactly one daughter, leading to a stable female population over time (ignoring migration).
Information Booster:

• NRR = 1 means the female population exactly replaces itself in the long run.
  
• GRR = 1 (Gross Reproduction Rate) would mean one daughter per woman if no mortality — but since some women die before the end of reproductive age, NRR adjusts for that.
  
• TFR ≈ 2.1 generally corresponds to NRR = 1 in low-mortality populations.
  
• GFR is not a replacement measure — it’s the number of births per 1000 women of reproductive age in a given year.
  

Additional Knowledge:

• NRR > 1 → population growth
  
• NRR < 1 → population decline
  
• NRR accounts for survival of women through childbearing years, making it more realistic than GRR for projecting population stability.