Answer:
An article published in a scientific journal
Explanation:
A credible source refers to a source that is reliable, is not subjective and is backed with evidence like research articles from authors that are recognized and academic databases. According to this, the answer is that the resource that would be considered most credible is an article published in a scientific journal. The other options are not credible sources because an article on Wikipedia, a blog about the writer's own experiment and an essay about science in a popular magazine are sources that may contain the author's opinion who usually is not identified or an expert in the subject and these sources are not trustworthy.
