Answer:
Repetition emphasizes the tone and mood of the narrator, when we see that he repeats the bad qualities any one can guess that the narrator is angry, this applies to real life as well.
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The answer is wheat, beans, oil, salt, and powdered food
Jack believes that they no longer need the conch because they know who to listen to and who to allow to speak. They no longer need to conch to decide that. This shows regression because they learned to effectively choose someone to speak without needing the conch to do it for them.