Answer:
D. The Industrial Workers of the World (IWW)
Explanation:
IWW has the concept of "One Big Union", and argues that all workers must be united as a social class to replace capitalism and seek labor with industrial democracy. They are known as the Wobbly Shop workplace democracy model, where workers choose their managers and other forms of grassroots democracy are implemented. IWW membership does not require that someone working at work is represented, nor does it exclude membership in another union. In 2012, IWW moved its General Center office to 2036 West Montrose in Chicago.
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