Your job is to critique/challenge these research journal articles. Critique the scientific evidence/results, there is an attached “cheat sheet” in which you can refer to on what to critique. The terms (in cheat sheet) may seem confusing to someone without a science background otherwise should be easy to understand if you search the meaning of those scientific terms; variables, external validity etc.
These are the links provided to the journal articles you have to critique. (You don’t need to critique all of them, as long as you have about 275 words then should be fine.)
I’ve also attached a page referencing the links if you can’t access some of them so that you can find those articles on your own.