Answer:
b. Female participation rates have risen steadily throughout the entire period.
Explanation:
The involvement of women in the labor rate is oen of the main factor for the US economy grow for the period as their participation double between now and 1950.
At that point in history, women participation rate was of a third while now two third of the women work.
The rate at which women enter the job market risen throguth the entire period of the seconf half of the twentieth century