Final answer:
The logical argument claiming all desserts are low-fat because they are sweet is incorrect, as exemplified by a buttercream cake, which is sweet yet high in fat, thus invalidating the generalization that all desserts are low in fat.
Step-by-step explanation:
The question appears to be a logical argument related to desserts and their characteristics, primarily whether all desserts are both sweet and low in fat. The given argument suggests that since all desserts are sweet, and some sweets are low fat, it can be concluded that all desserts are low fat. However, this is an example of a logical fallacy. It's important to identify the specific qualities that differentiate sweet foods and those that are both sweet and categorized specifically as desserts.
Using an example like a buttercream cake, we can see that not all desserts are low fat, even though they are sweet. Desserts such as buttercream cakes usually contain high levels of fat, thus disproving the original argument that all desserts are low fat. Furthermore, other high-fat sweet foods, such as those made with whole milk or cheese, follow the same pattern.
Added sugars contribute significantly to the fat content of desserts, and these are often found in frozen desserts, dairy products, cakes, and many other sweet treats. Therefore, the original statement that all desserts are low fat because they are sweet is incorrect since there are several counterexamples demonstrating desserts with a high fat content.