Answer: b. social and economic security
Explanation:
SOCIAL AND ECONOMIC SECURITY is the best answer of all the options. Based on physical evidence, it would seem as though that developed countries (which have higher social and economic security levels) have lower TOTAL FERTILITY RATES (TFR).
There is an inverse relationship between income and fertility, countries with high GDPs have low TFR, the reverse holds true for low GDP countries. Since we can argue that higher GDP countries got to that level with social and economic security, deductively, social and economic security reduce TFR.
