Advertisement: In experiments by a leading cardiologist, people who ate two bowls of Health Crunch cereal daily, as one element of a reduced calorie diet, lost an average of ten pounds and reduced many of their risk factors for heart disease. This shows that eating Health Crunch cereal is an effective way to improve your health.
The advertisement's argument is most vulnerable to criticism on which of the following grounds?
A. It confuses a statement that would support the argument's conclusion with a statement that is supported by the argument's conclusion.
B. It confuses two possible meanings of an ambiguous term.
C. It uses value-laden language unrelated to the argument's reasoning in order to influence the reader's opinion.
D. The conclusion assumes an explanation for the experimental results that is no better supported by the reported data than other explanation that is at least as probable.
E. It overlooks the possibility that an effective way to achieve a result may be neither necessary to achieve that result nor the most effective way to do so.
Source: Topgmat