Which logical fallacy is used in the text?
Mr. Livingston can quit smoking because he's capable of stopping.

 - circular reasoning: an argument that supports a claim with the claim itself
 - guilt by association: a negative association intended to discredit someone or something
 - bandwagon fallacy: the assumption that the popular choice is automatically correct
The text argues that Mr. Livingston can quit smoking because he is able to stop. However, the "evidence" is just a restatement of the claim itself. This illustrates a type of logical fallacy known as circular reasoning.