The argument is saying this cereal is One-of-a-kind. It uses the facts of Psyllium fiber and says it give 5 grams easily.
We need to weaken this. If I say I have other cereals, which do the same OR this cereal has some other disadvantages, my argument will be weakened.
(A) Healthy-Oh’s is, in fact, the only cereal to use psyllium fiber. -->
A Strengthener.(B) Any fiber, including that found in many other cereals, has the same benefits to health as psyllium fiber.
Nice, so it means this new cereal has no ADDED advantage over the others.(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. :
We already know this, no new information.(D) Another brand of cereal used to contain psyllium fiber, but it was not successful and is no longer on the market.
Out of scope.(E) Psyllium fiber is also found in other products, such as powdered fiber supplements.
Ok, but do they have the same quantity as this one? We don't know.