Because Africans were poorly treated and everyone finally saw the way they were treated.
This is of course slightly subjective, but most would agree that "<span>A. Showing up and being on time" is the most important, since as long as you're there doing work you're inevitably getting better. </span>
B because im pretty sure that was his main goal at task
He helped to stop child labor laws from being inhumane or harmful. Since the employers only cared about getting profit.
I'm thinking its c cause I'm in high school and I'm still on the industrial revolution