Answer:
a) a poor education system
You didn't provide the possible answers, however, analogies provide sound logic and reasoning that easily persuades because it shows that the person speaking has a general understanding of the things that are debated and can critically approach the problems.
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B is the answer hope this helps I took the quiz btw so this should be correct
The central idea is the central, unifying element of the story, which ties together all of the other elements of fiction used by the author to tell the story.