Answer: A. Women participated in the war effort in large numbers, serving mainly in support roles.
Explanation: During WWII, most of the men went away to the military, so the women began to fill into factories. These women played a major role in supporting the United States, as they made weapons, gear, etc. for the military to use.
This is where figures like Rosie the Riveter came from with the famous poster depicting her stating "We Can Do It!"