A: "People should know that portion size adds calories to meals" is the best choice that expresses one of the author's main claims in this article.
B: "Recently, investigators have pointed out that one result of our overabundant, overmarketed food supply is an increase in the amounts of food sold and consumed at any one time" and "If we want to reverse the obesity epidemic we must get this point across, perhaps by demanding visible calorie labeling in restaurants and fast food establishments, and other policies that address the environment of food choice" are the two sentences from the passage that best support the answer to Question 1.