577 - Logical Reasoning

Many people argue that the death penalty deters murder. However, the notorious killer Ned Grandy deliberately moved to a state that imposes the death penalty just before embarking on a series of ferocious murders. Thus, it seems clear that the existence of the death penalty does not serve as a deterrent to murder.
The argument above may best be characterized as:

1. an appeal to emotion.
2. a flawed analogy.
3. a general conclusion based on a specific example.
4. circular reasoning.
5. an appligreion of a general principle to a specific example.