Who became a symbol to encourage women to participate in the war effort during WWII?

Rosie the Riveter emerged as an iconic symbol during World War II to encourage women to join the workforce and support the war effort. She represented the women who took on roles traditionally held by men, working in factories, shipyards, and other industries to produce war materials. The character embodied strength, capability, and determination, making her a powerful figure in promoting gender equality in the workplace.

The imagery associated with Rosie the Riveter, particularly the famous "We Can Do It!" poster, highlighted the vital contributions of women during the war and encouraged them to step into new roles. This campaign not only bolstered morale but also helped shift societal perceptions regarding women's work, paving the way for future advances in women's rights.

Other options, while potentially related to the context of women’s contributions during the war, do not carry the same level of historical significance or cultural impact as Rosie the Riveter.