To prevent young children from working in mines and factories, many states passed laws that
OA. required employers to pay children for workplace injuries.
ОВ.
established free public daycare centers for children.
OC. required young children to attend school.
OD. established a minimum wage for children.
OA and OD don't make much sense because the children would still be in the mines and factories. OB does make sense in a way, but after the daycare ends, they will have to stay with their parent who may be in factories/mines.
