The term was used for accusation of disloyalty with little or no evidence.
Das Kapital and Communist Manifesto
It is C because the men were out to fight the war and in that time only men could have jobs, so when the men left the women had to take over and their role was so important because they were making everything all the soldiers needed like food and ammunition.
They were not treated well, they were immigrants looking for a better life in the US and they worked for lower wages which took away jobs from people that had been in the US in many industrial cities