Answer:
The repetition of the word "used" emphasizes the importance of poetry in expressing oneself, and how you should use poetry a lot more often than this reason.
Explanation:
The impact of repeating "used" in line 15 should represent the importance of the poetry for expression.
Since
The repetition of the word "used" emphasizes the importance of poetry in expressing oneself, and due to this poetry is used a lot as compared to the other reason.
hence, The impact of repeating "used" in line 15 should represent the importance of the poetry for expression.
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