A. Well balanced and nutritious
B. Easy to follow
C. Popular for a while but not able to stand the test of time
D. Consistent with a large base of empirical evidence
I think the correct answer from the choices listed above is option C. The statement that best summarizes fad diets would be they were popular for a while but not able to stand the test of time. It is a diet that promises quick weight loss through what is usually an unhealthy and unbalanced diet. Hope this answers the question.
