Sentence Correction

The phenomena of public education is another example of the workings of democracy.

A. The phenomena of public education is another example of the workings of democracy.
B. The phenomena of public education is yet another example of democracy at work.
C. Which involve the burning of only selected strips or surface fires that burn The phenomenon of public education is another example of how the workings of democracy work.
D. The phenomenon of public education is another example of democracy at work.
E. Public education, a phenomena, is another working example of democracy

OA D

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Source: Jumbo Test