nongovernmental organizations operate\n○ with governmental oversight.\n○ using contract workers.\n○…

Brief Explanations:

Nongovernmental organizations (NGOs) are defined by their independence from government control. They are self - governing and operate based on their own goals and initiatives, not under direct governmental oversight in their day - to - day operations. They can use contract workers, but this is not a defining characteristic. Also, they can operate globally and not just in single countries.

Answer:

C. independent of government.