Which items do historians study to learn about the past

Which of the following statements accurately describes one effect world waril had on women's roles in both the united states and great britain? oa. the war created opportunities for women to challenge gendernorms.ob. the war pushed many women out of the workforce by makingtheir skills obsolete.oc. the war reinforced men and women's traditional gender roles.od. the war convinced women that working in the home was best.