Jamie is reviewing a new diet plan that involves purchasing pre-packaged meals and taking a patented energy supplement. In an ad explaining how it works, Jamie reads about a study cited as evidence supporting the effectiveness of the plan. In the study, two groups were followed: one following the plan and another following a simple low-carbohydrate diet. What should Jamie look for in the study to have full confidence in its scientific reliability? (2 points)
a
A list of differences between the two diets in the study
b
A comparison of the plan to a variety of diets
c
Details on the number of studies conducted and the results of each trial
d
Testimony from a wide range of users
