Final answer:
Lincoln uses elevated language to add power and grandeur to his speech during the Civil War.
Step-by-step explanation:
The option that best describes the diction Lincoln uses to achieve his purpose during the Civil War is B. He uses elevated language to add power and grandeur to his speech. Through the use of elevated language, Lincoln aims to inspire and motivate the American people, emphasizing the importance of unity and perseverance during a challenging period in history.
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