The sentence that presents the correct use of the ellipsis is "now we are engaged in a great civil war, testing whether that nation . . . can long harden. We are met on a great battlefield of that war."
In the sentence shown above, we can see that the ellipsis was used to shorten Lincoln's speech, omitting an unnecessary clause to promote full knowledge of the meaning of the text.
Therefore, this sentence shows the correct use of ellipsis.
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https://brainly.com/question/8062678