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Twain accomplishes his purpose chiefly through telling a story within a story, also called a "frame story".
In an informative or explanatory article about party planning, the conceptthat6 would be used to explain something to the reader is menu planning. The correct answer is option D. The main highlight of a party has always been the food that should be prepared and served. This includes careful planning that's why it should be explained well.
It would have been better to know the details about Sergeis 's decision to see what he can do good or bad.