Hello. You did not report the article to which this question refers. For this reason, it is not possible for your question to be answered. However, I will try to help you in the best possible way, explaining how to find the answer.
It is only possible to answer your question by reading the article. However, the question asks you to provide evidence that the authors' arguments about the permanence of social media in American society. Evidences are sentences that present information capable of proving and justifying the information presented in an argument. In that case, you should look in the article, which are the sentences that the authors present to prove their argument that social media is a permanent part of society. These evidences can be examples or facts that present the impossibility of excluding social media from the life of the modern human being.
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