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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.
Legalism does not concern itself with familial matters. In addition, Legalism only focused on family members in their capacity as citizens. On the other hand, Confucianism consisted of roles that were to be assumed by family members in an ideal society. Hope this helped!
The way how fossil fuels could be used wisely is through a careful planning strategy where we would include and think about the possible distribution methods of fossil fuels around the world for nations which cannot afford and use renewable energy sources. Moreover, they would be more wisely used when less of them would be used for daily needs and when massive companies would transition to renewable energy sources.