It seems that you missed the given choices of the question above; but anyway, here is the correct answer. The correct answer would be RHETORIC. When you are able to convince your principal to cancel an assembly because of a political concern, this situation is an example of a rhetoric. Rhetoric is defined as the art of persuasion by using effective written, spoken or visual language.
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A serious drawback of telegraph devices was that they lacked quality in communication, which is why when the telephone came about – invented by Alexander Graham Bell in 1876 –
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The answer is A hope it helps
