Question

A food manufacturer performs a study on their new brand of cereal. In the study, the food manufacturer compares their brand of cereal to two other brands in terms of vitamin and mineral content. The conclusion that the food manufacturer publishes at the end of the study is that their brand of cereal is the healthiest cereal in a market that contains over 50 brands.

This conclusion

A.
is faulty and misleading because the food manufacturer only compared their cereal to two other brands.
B.
is faulty and misleading because a food manufacturer cannot measure the nutritional content of cereal.
C.
is logical and valid because the food manufacturer looked at both vitamin and mineral content.
D.
is logical and valid because the conclusions of scientific studies cannot be manipulated by researchers.