Why do writers uses statistics in the introductory paragraph?

Explanation:

Writers use statistics in the intro paragraph b/c;

1. It highlights the logical importance of the issue and provide evidence for the writer's contention.

2 It  provides a type of evidence that is difficult to refute.

3 the use of statistics can aid a writer's credibility by demonstrating that they have researched an issue.

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b is the answer.   i sat on the lumpy sofa, totally exhausted, with a bad taste in my mouth, wondering what i should do next.  

evertheless he ought to be slow to believe and to act, nor should he himself show fear, but proceed in a temperate manner with prudence and humanity, so that too much confidence may not make him incautious and too much distrust render him intolerable.

explanation: