Answer:
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D) a rhyming couplet.
Step-by-step explanation:
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The structure of a Shakespearean sonnet typically consists of three quatrains (four-line stanzas) followed by a rhyming couplet (two-line stanza). The third quatrain sets the stage for the concluding couplet, which often brings a twist, resolution, or summary of the ideas presented in the previous lines.