Answer: b. an article evaluated by other scientists
Step-by-step explanation:
A reliable source is the source of information that provides the valid argument , discussion, and reason to believe the stated content. The examples of the reliable source involves the reviewed articles or books written by the researchers belonging to the authentic and recognized organizations for public.
An article evaluated by other scientists is the correct option. As an article may exhibit mistakes or may be incorrect on the basis of implemented methodologies and result of the research conducted or the review of the research.