If this refers to World War II, then women who worked in factories were symbolized by C. "Rosie the Riveter".
No, technically speaking it is false that industrial production fell due to a lack of raw materials in Japan after WWI, since although Japan lacked a great many materials, they invaded foreign territories in order to make up for this deficit.
It’s not C. I’m unsure as well, but I think the answer is B, after all, only a few countries wanted slaves for labor. The rest needed goods and supplies, etc. I hope it helped :3
Child labor is alot cheaper than paying an adult a living wage. Often the children working these jobs don't have the luxury of saying no to these jobs that pay maybe a dollar an hour.