Answer:
I say its B also because the rest make no sense
The answer to your question is b
The "d. United Nations" would not be a good example of an NGO, since NGOs (non-governmental organizations) usually act independently and on a much smaller scale.
William M. Tweed,(known as the 'Boss' within the organization) ran Tammany Hall with a efficiently corrupt political machine, this was mostly based on Graft and Patronage.
