Question

the main message of the poster is that
women in noncombatant military jobs were important to winning the war.
female workers were patriotic and made the best military typists.
women could work in any job they chose during the war.
female workers could single - handedly win the war.

Explanation:

The poster "Keep 'Em Flying, Miss U.S.A." likely relates to women's roles in the military (non - combat) during a war. The option "women in noncombat military jobs were important to winning the war" aligns with the idea that women's contributions in non - combat roles were vital for the war effort. The other options are less accurate: the second option is too narrow (only typists), the third option overstates (any job they chose is not implied), and the fourth option is unrealistic (single - handedly win the war).

Answer:

A. women in noncombat military jobs were important to winning the war