The answer to the question is C
If you don't treat someone right they can be mean to u or complain against you. they can turn people against you so its always best to be treat someone in a good way
I think that you answer is B physical labor
Is 3 the battle against the plague
Factory conditions were so bad because they didn't have the technology nor the knowledge we have today to run a decent factory. the owners were concerned about profits then a worker's safety. and since workers rights weren't written at the time, the owners got to treat the workers howecer they pleased.