The best revision of the sentence using academic vocabulary is "The speaker of Okita's poem attempts to characterize herself in ways that have little to do...."
Academic vocabulary refers to the use of more formal words and phrases as well as jargon to convey ideas. Academic vocabulary sounds different, more formal and more difficult, than the vocabulary we use in daily conversations.
That is why we can choose option D. This is the sentence that sounds most formal, not relying on informalities such as "have a go" or "have a crack" like the other options do.
Therefore, the correct answer is letter D, "The speaker of Okita's poem attempts to characterize herself in ways that have little to do with her heritage."
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