Study the Body of Each of the Following Paragraphs

Multiple Choice

Study the body of each of the following paragraphs. Then select the letter of the topic sentence that is most accurate.
-______________________________________________________________. First of all, most people don't have a realistic idea of portion sizes. Restaurants often contribute to the problem by serving portions that are twice the recommended serving size. Second, people choose fad diets that they can't sustain rather than changing their eating habits for good. To make matters worse, people don't exercise because they find it difficult or boring. Therefore, they make excuses and don't do it. Finally, people don't want to give up their favorite foods, so they refuse to change their eating habits.

A) A sensible diet is the key to weight loss.
B) Obesity has become a serious problem in America.
C) People fail to lose weight for a number of reasons.