Final answer:
The best definition of a credible source is 'c', which is information that can be verified by compelling evidence. Credible sources may include peer-reviewed academic publications or nonacademic texts authored by recognized authorities, showcasing expertise, honesty, rigorous methodology, and relevance to the researcher's purpose.
Step-by-step explanation:
The best definition of a credible source is 'c'. Something that can be verified by compelling evidence. A credible source, such as a peer-reviewed academic publication, a publication by a recognized authority like the World Health Organization, or a well-researched nonacademic text, should be authored by an expert or authority in the field. The author should be honest, unbiased, rational, well-informed, and clearheaded. Furthermore, the source should be trustworthy, as evaluated by the credentials of the authors and the rigorousness of the methodology used in its creation.
For example, an academic article with peer-reviewed status is highly credible because it has undergone an extensive review process by other experts in the field. These sources provide in-depth analysis and original research. On the other hand, credible nonacademic sources are valuable for their broader perspective on current events or discoveries, especially those not yet reviewed in academic circles. Evaluation of these sources involves considering the authors' academic association and determining whether the source is a compilation of study research from credible sources. Lastly, the value of a source is also determined by its fit for the researcher's purpose, whether it supports and enhances the argument being made.