All four options you provided describe actions related to women during wartime, but they vary in their direct link to government support:
a) The military created schools to train nurses so women could join the military.
b) Eleanor Roosevelt convinced leaders of the Manhattan Project to hire female chemists.
c) President Roosevelt started the first U.S. government childcare service centers.
d) The military created units of women soldiers, such as the WACs and the WASPs.
Among these, option d is particularly notable as it represents a direct military initiative to incorporate women into military service during the war. The Women's Army Corps (WAC) and the Women Airforce Service Pilots (WASPs) were established to allow women to serve in various capacities, significantly reflecting government support for women's roles in the military.
However, options a, b, and c also illustrate the ways in which government and leaders supported women's contributions during the war. Ultimately, all four options indicate forms of support received by women from the government during the war time.