Answer: I believe that the answer is B: working outside of the home.
Explanation:
I believe the answer is: c. airplanes, farming
During the wartime, airplanes industries managed to develop the technology that allow the planes to move at higher elevation and speed, which would give a competitive advantage during the war.
The development in farming revolve around their preservation technique, which made is easier for the government to prepare the meal supply for their soldiers.
Land/Slaves they wanted slaves keep in mind this was back a long time ago