A factor which could make a source unreliable is: C. Only non-experts corroborate the data in an article.
In Science, a reliable source can be defined as an information source that has been tested, verified and credible.
This ultimately implies that, a reliable source is unbiased, credible, trustworthy, and has pedigree.
Additionally, the data contained or used in a reliable source must be corroborated by expert researchers through the use of various tools. Thus, corroboration helps to enhance reliability, replicability, validity, authenticity, credibility and accuracy of any research work.
In conclusion, an information source is considered to be unreliable when only non-experts corroborate the data in an article.
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