Directions: In the question given below, a passage is given followed by five statements. Read the information and answer the question that follows. Recent research definitively proves that consuming at least three cups of black coffee daily prevents type 2 diabetes. Therefore, health experts recommend that everyone should drink three cups of black coffee per day to prevent diabetes. Statements: I. The research indicating the benefits of coffee was funded by major coffee companies. II. High consumption of coffee can lead to increased anxiety and sleep disorders. III. Not everyone can tolerate coffee due to its caffeine content. IV. Studies show that diet and exercise are more effective in preventing type 2 diabetes. V. Excessive caffeine intake can have adverse health effects. Which of the following will weaken the above statement?

### Concept & Logic In critical reasoning, a conclusion based on a scientific claim can be significantly weakened if the source of the research has a vested interest or conflict of interest, as it casts doubt on the validity of the findings. ### Step-by-Step Solution - **Analyze the argument**: The passage concludes that everyone should drink three cups of coffee daily to prevent diabetes, based on the premise that recent research "definitively proves" this benefit. - **Evaluate the options**: We need to find the statement that most strongly undermines this recommendation. - **Statement I**: Suggests the research was funded by coffee companies. This introduces a major conflict of interest, undermining the credibility of the "definitive proof" upon which the entire recommendation is based. - **Statements II & V**: Point out side effects of high/excessive consumption, but three cups might not necessarily be considered "high" or "excessive" for the general population in the context of the study. - **Statement III**: Mentions tolerance issues, which is a valid point against the word "everyone," but does not invalidate the core medical claim about diabetes prevention. - **Statement IV**: Suggests alternatives (diet and exercise), but does not weaken the claim that coffee works. - Statement I directly attacks the foundational premise of the argument, making it the most fundamental weakener. ### Exam Strategy & Shortcut When an argument relies heavily on a study or research, always look for an option that exposes a bias, flawed methodology, or vested interest in that study. This is a classic critical reasoning pattern. ### Common Pitfall Choosing an option that offers an alternative solution (like diet and exercise) rather than attacking the argument's own logic and evidence. ### Final Answer Therefore, the correct answer is **Only I**.