begging the question
Your conclusion is hiding in your premise. Also: this phrase does not mean what you think.
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Wrong: “It’s the best option because nothing else is as good.”
Right: “What makes it better?”
The premise and the conclusion are the same sentence wearing different clothes.
Circular reasoning: the argument’s support is the claim itself, restated. It sounds like reasoning because it has the shape of reasoning, but nothing enters that wasn’t already assumed.
The bonus peeve
“Begs the question” does not mean “raises the question.” That’s the far more common misuse and it’s what most people saying it actually mean. If a fact makes you want to ask something, it raises a question. Begging the question is this specific logical error, and using it the other way makes the actual term unusable.
That ship may have sailed. It’s still wrong.
Now go prove the premise.