An article about the results of the latest study on the health effects of vitamin B₁₂ is more credible if it is

Question

Quizplus · Accepted Answer

The best choice is C, as a study supported by other researchers who have replicated the same results adds credibility to the findings. A study carried out by an individual organization that sells a B₁₂ product (choice A) may have bias and conflicts of interest. Being the first study showing a health benefit for taking vitamin B₁₂ (choice B) does not necessarily add credibility, as it could be an outlier or contradicted by future studies. Lacking information about how the study was funded (choice D) may raise concerns about potential bias or conflicts of interest.

An Article About the Results of the Latest Study on the Health