What happened with most of the working women right after the wwii ? a. they were promoted to administrative positions b. they were demoted to assembly line positions c. they were kept on, but at a lower wage d. they were laid off

D. The women were laid off

"Laid off" is a nice term.  "Fired" might be just as accurate in many cases.  Or in other cases, as industries converted back to peacetime purposes rather than wartime production, they refused to "rehire" women for the "new" jobs in the "new" factories.   There was a priority on giving jobs to men, especially veterans returning from the war.  And there was an emphasis on women returning to their "proper" place in the home.

4.a depression is the answer