If we have to do this question in a quantitative approach, I choose B. I assume that Boy (B) and Girl (G) have 50% chance each. Then let's assume that there a sample 1 million families, which should be representative of the population. Before the policy is adopted, there is no limit on how many children a family has. Therefore B and G should be 50% each because of equal possibility. With the policy, assume that half (500,000) families have boy and the other half have girl. Then one half with stop and the other half will continue. And it goes on follows: B 500,000 --> stop G 500,000 --> 250,000 B ---> stop 250,000 G ---> 125,000 B ---> stop 125,000 G ---> 62,500 B ---> stop 62,500 G ---> ....(continue the trend) I have no present knowledge of advanced math. But as this trend continues, we should know that the boy and girl would stay 50% and 50%. Therefore B is correct. |