(A) ** more women entered the labor force
(B) union membership decreased
(C) corporate profits declined
(D) more men left the labor force
EXPLANATIONS BELOW
Concept note-1: -As the United States became a major supplier for the Allied Powers, more women entered the labor force.
Concept note-2: -With millions of men away from home, women filled manufacturing and agricultural positions on the home front. Others provided support on the front lines as nurses, doctors, ambulance drivers, translators and, in rare cases, on the battlefield.
Concept note-3: -While the most famous image of female patriotism during World War II is Rosie the Riveter, women were involved in other aspects of the war effort outside of factories. More than six million women took wartime jobs in factories, three million volunteered with the Red Cross, and over 200, 000 served in the military.
Concept note-4: -The U.S. made its major contributions in terms of supplies, raw material, and money, starting in 1917. American soldiers under General of the Armies John Pershing, Commander-in-Chief of the American Expeditionary Force (AEF), arrived at the rate of 10, 000 men a day on the Western Front in the summer of 1918.