<span>The author listed wasn't credible. </span>
<span>the arrangement or disposition of people or things in relation to each other according to a particular sequence, pattern, or method.
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<span>C. An argument uses facts, emotions, and credibility to persuade an audience to believe something.</span>
A - Samantha returned the book herself.
When using the active voice, the subject comes before the verb with the action (Samantha returned). Passive sentences have a noun with the action being done TO them (cake was made, buildings were built, coach was pushed)