Final answer:
The literary device that can draw an audience into an argument or alienate them is tone.
Step-by-step explanation:
The literary device that has the potential to either draw an audience into your argument or alienate them is tone. Tone refers to the attitude or mood conveyed in a piece of writing. The tone you choose can help create a connection with your audience or drive them away. For example, using a friendly and conversational tone can appeal to readers, whereas a sarcastic or condescending tone can alienate them.
Learn more about The impact of tone in writing