40 What is a solution to problems which would otherwise create a 'race-to-the-bottom' dynamic between states, as exemplified by the issue of child labor during the post-Civil War industrialization? Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer. a States adopted policy solutions in a piecemeal fashion, with the eventual complete abolition of child labor at the state level. b The national government adopted a policy solution across the U.S. all at once banning child labor. c Only states which desired to adopted a policy solutions did so, sacrificing their competitive advantage, leading to incomplete abolition of child labor to this day. d The free market determined child labor was not efficient, and although it is not banned child labor is not practiced