The correct answer would be option C, Editor.
The job function of a news commentator is most similar to that of an Editor.
Explanation:
A person who is an in charge, and who is authorized to finalize the content of the newspaper or magazine, is called an editor.
A person who comments on the news, or on events, is called a news commentator.
The job function of an editor and a commentator is similar in a way that both deals with the final content of the news or events. Editors's duty is to finalize the content where as a commentator's duty is to finalize and deliver the content to the public. The job function of both are almost similar.
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