Answer:
Circular Reasoning
Step-by-step explanation:
This fallacy occurs when you basically state the same thing twice, basically. Often, you see people changing words and using another sentence that has the same or a very close meaning to the anterior sentence as if it was an argument to support the first sentence.
If The Lord of the Rings is someone's favorite movie, it is clear that the person sees that movie as a good movie, therefore, "because it is so good" consists of circular reasoning.