Explanation
The advertisement leverages the recommendation by most nutritionists that eating fish twice a week is beneficial. We are tasked to find a statement that most weakens this position.
A. While this option brings up a potential health concern with eating fish, it does not directly undermine the argument that tilapia is a good choice for obtaining the benefits of fish without the fishy taste.
B. The ecological impact of tilapia as an invasive species does not address the nutritional value or taste of the fish, which is the focus of the advertisement's argument.
C. (Correct Response) This option undermines the advertisement's argument. It suggests that eating tilapia might not provide the health benefits implied by the recommendation to eat fish twice a week, which is the central point of the advertisement.
D. This option discusses the eating habits of people who dislike the taste of fish, but it does not directly challenge the argument about the benefits of eating tilapia.
E. This option may explain why some people avoid fish, but it does not weaken the argument that tilapia is beneficial for those who want to eat fish without a strong fishy taste.
The statement that most seriously weakens the advertisement's argument is C, as it directly challenges the premise.