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The choice that is least helpful in determining the reliability of a source is the inclusion of several quotes from a well-known author. While quotes can lend some credibility to an article, they do not provide a comprehensive assessment of the source's overall reliability or the quality of the information presented.

In contrast, peer-reviewed sources undergo a rigorous evaluation process by other experts in the field, which significantly enhances their credibility. Considering the expertise and credentials of the author is crucial, as it indicates the author's authority on the subject matter, directly impacting the reliability of the information. Additionally, evaluating the publication date ensures that the information is current and relevant, which is essential in fields such as health and nutrition, where guidelines and research findings are continuously evolving.

Overall, the presence of quotes from a well-known author, while potentially useful, does not equate to a solid basis for determining the overall trustworthiness of a source.