Read the excerpt from Obama's Second Inaugural Address.Through blood drawn by lash and blood drawn by sword, we learned that no union founded on the principles of liberty and equality could survive half-slave and half-free. We made ourselves anew, and vowed to move forward together.

The vivid phrases “blood drawn by lash” and “blood drawn by sword” evoke the suffering and violence of slavery and the Civil War. This language is meant to stir the audience’s feelings, making it an appeal to emotion. The correct choice is “an appeal to emotion.”

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