The Empirical Research on the Reasons for the Incredible Increase

The empirical research on the reasons for the incredible increase in the labour force participation rate for women shows that:

A) Improved education facilities for women were responsible for the increase in the participation rate.
B) Better working conditions for women in a broader array of occupations were responsible for the increase in the participation rate.
C) Rising wages for women were responsible for the increase in the participation rate.
D) Falling fertility rates among women were responsible for the increase in the participation rate.
E) Macroeconomic conditions were responsible for the increase in the participation rate.