Please read the article in the website below.
https://www.robert-h-frank.com/EV.08.07.11.pdf
The supply - demand model of marriage can help us analyze what has been happening in the Chinese marriage market.
a. Draw a S-D model of the Chinese marriage market before the one-child policy. Label the equilibrium level of SF as S*F. What does this equilibrium represent?
b. Show the effects of the one-child policy, coupled with a preference for sons and technologies that permit selective abortion, as a shift in the S curve. How is SF affected?
c. The article describes how Chinese women have become more selective in the marriage market. Explain this using your diagram.