This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
In family welfare programme, score of 1 is given to- 
Select and explain. 
A. Birth rate, B. Net reproduction rate, C. Achievement of goal, D. Total implementation of programme
B: Net reproduction rate
Answer: B: Net reproduction rate 
Explanation: NRR of 1 is equivalent to attaining approx. the 2 child norm