I could be wrong, but I am pretty sure that the answer is: D, pollution.
For better working conditions for experianced laborors. the knights of labor however wanted better working conditions for both non experienced and experienced laborers, which ultimatley led to their downfall as the experianced laborers looked down on the inexperiienced and joined the american federation instead as they only wanted this for experienced laborers.
The answer is Democracy because it is governed by citizens.
This is what a common wombat looks like. Cute right?
