Answer: B --- "Dogs are better than cats because dogs are just better pets to have."
Step-by-step explanation:
The use of an argument's conclusion as a premise for proving the argument (assuming what it is attempting to prove) - a Circular reasoning. In this case, answer B is looping back to the beginning of the question without having any proper reasoning's to do so, except for them simply being "better." He doesn't have evidence to back up this claim either, the entirety of it's structure being dependent on the "end" of the question.