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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No because adjectives go by the order of opinion , size ,age, shape,color, origin,material and purpose
The device would be a metaphor because the phrase is comparing headmasters to giants without using the words like or as
I think it is C
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One can quote a material, or paraphrase it.