A claim is scientific and accurate if it is O based on someone's opinion.
O based on data from a controlled experiment and confirmed by multiple trials.
O based on a presentation by a professional or an amateur in the field.
based on a story that makes sense.
Plz help

"six months ago, several of molly's friends joined the trimtime fitness center. each of them participated in trimtime's weight-reduction and fitness regimen. all reported substantial weight reduction, and all are visibly slimmer. molly is convinced. she joins trimtime and enrolls in the program, hoping and expecting to see the same results. she is especially delighted to learn that trimtime had adjusted its program to make it even more effective in a shorter period of time." what is the feature in question/attribute of interest in this argument?