The following advertisement appeared on behalf of a new breakfast cereal:
“Healthy-Oh’s breakfast cereal is one-of-akind good for you! Among breakfast cereals, only Healthy-Oh’s has five grams of psyllium fiber. Psyllium fiber is good for your heart and helps you to lose weight. Doctors and nutritionists recommend at least twenty grams of fiber per day, so why not get twenty-five percent of your fiber the easy way with Healthy-Oh’s cereal?”
Which of the following, if true, would most weaken the product’s claim to be “one-of-akind good for you”?(A) Healthy-Oh’s is, in fact, the only cereal to use psyllium fiber.
(B) Any fiber, including that found in many other cereals, has the same benefits to health as psyllium fiber.
(C) Many doctors and nutritionists actually recommend at least twenty-five grams of fiber per day, and they base their recommendations on total calorie intake.
(D) Another brand of cereal used to contain psyllium fiber, but it was not successful and is no longer on the market.
(E) Psyllium fiber is also found in other products, such as powdered fiber supplements.
Source: GMAT for Dummies