Answer: Sentence 2 should be revised because it contains fallacious reasoning.
Sentence 2 claims that social media helps people share information, which in turn improves their lives. However, the conclusion (that people's lives are improved) does not follow from the premise (that social media allows people to share information). It is not clear why people's lives are improved. As the conclusion is not supported by previous reasoning, this is an example of a fallacy, and it should be revised.
The analysis of the passage that best describes why it should be revised is Sentence 2 because it contains fallacious reasoning.
This refers to the review of a text to make some changes in it to make it better.
Hence, we can see that Sentence 2 should be revised because it has a false conclusion which is as a result of the fallacious reasoning that it contains.
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