The correct answer is D: They helped guard against the possibility of strikes that would slow wartime production.
In times of war, wartime production was essential for the continuity and success of projects overseas. This was regarding clothing, food, weapons, vehicles, etc. Everything was cheaper, safer and more patriotic if it was manufactured home. It was because of this reason that it was so important to keep wartime production fast and efficient.
To do this, employers and factory owners had to make sure that their factory workers wouldn't go on strikes. Raising wages and better worker safety regulations helped to maintain a good spirit between the workers, preventing revolts, strikes and boicots.
