A“slam dunk” argument is likely the product of
a single premise.
a fallacious syllogism.
deductive reasoning.
induction.

A “slam dunk” argument is likely the product of a fallacious syllogism. The word “slam dunk” has actually originated from the basketball games. This word is used to show people a forceful move in the game of basketball. The player puts the ball in the basket with full power and force. It is often considered a dramatic shot in the game. In literary sense, the word can be used to express violent actions as well. It can also be used to describe a vicious fight among individuals.    

I’m going to guess #4 since that seems pretty logical.