Vignette #2 Todd Has Been Overweight Since Childhood but as a College

Vignette #2 Todd has been overweight since childhood but as a college student has made a commitment to lose weight. He goes on the Atkins diet and after a few months switches to Weight Watchers. After 6 months, Todd has lost 12 pounds but is still overweight. He is discouraged he hasn't lost more weight and he goes to a fast-food restaurant and has two cheeseburgers and a milkshake. Let's see how knowledgeable you are regarding diets so you can effectively help Todd.
What is the rationale behind the Atkins diet?

A) Your blood type determines the types of foods you should eat.
B) A vegetarian diet that is low in fat accompanied by stress reduction will allow healthful weight loss.
C) Eliminating carbohydrates produces ketosis, which leads to decreased hunger.
D) Diet pills and weight-loss bars are the secret to weight loss success.
E) The consumption of low-glycemic foods prevents unhealthy fluctuations in blood sugar.