We can see here that dragging the sources on the left into the columns on the right to indicate which sources Jack can consider, we have:
Credible and Relevant Source:
- A scientific report on the drawbacks of caffeine consumption
- A technical report on how green tea is harvested and dried
- An encyclopedia article that describes the reasons people drink tea
Non-credible or Irrelevant Source:
- A journal article about historical people who have dru-nk green tea
- A .com website selling green tea that touts its health benefits
A credible and relevant source refers to a reputable and trustworthy information provider that offers accurate, well-researched, and authoritative content on a particular subject.