Final answer:
Option C is the best example of circular reasoning.
Step-by-step explanation:
The best example of circular reasoning is option C: My brother is class president, so naturally I should be treasurer.
Circular reasoning occurs when the premise of an argument is already assumed to be true without providing any evidence or logical explanation. In this case, the student assumes that because their brother is class president, they should automatically be treasurer without providing any justification for their suitability for the role.
Circular reasoning can weaken an argument and make it illogical, as it does not provide any valid reasons or evidence to support the conclusion.
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