To determine which statement a radical skeptic might be willing to doubt, let's first understand what a radical skeptic is. A radical skeptic is an extreme doubter who questions the certainty of any knowledge or beliefs. They tend to doubt even basic assumptions and commonly accepted beliefs.
Now, let's evaluate each statement to determine which one a radical skeptic might be willing to doubt:
1. 3 + 5 = 8: A radical skeptic might be less likely to doubt this statement because it is a simple arithmetic equation with a clear answer.
2. Grass is green: A radical skeptic might doubt this statement because it relies on perception and personal interpretation. They could argue that our perception of colors might be flawed, or that our understanding of what "green" means could be different from others'.
3. Cheese is fattening: A radical skeptic might also doubt this statement because it is a generalized assumption. They could argue that the concept of "fattening" is subjective and can vary from one person to another. Additionally, they might question the reliability of scientific studies or nutrition guidelines.
Therefore, based on the explanations above, a radical skeptic would likely be most willing to doubt the statement "Cheese is fattening."