Varying sentence structure enhances the flow of an essay by preventing monotony and keeping the reader engaged. It allows for a mixture of sentence types that helps convey ideas more effectively. Ultimately, this variation contributes to both the rhythm and clarity of the writing. ;
Varying sentence structure is critical for improving an essay's flow by preventing monotony and enhancing reader engagement. It allows for a mix of sentence types that support clarity and rhythm in writing. Therefore, the best answer to the question is B: It helps prevent repetitive and monotonous writing patterns.
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