There are five types of claims an author can use in an argumentative essay. Describe what a claim of fact is and how an author could use this in an argumentative essay.

A claim of fact is when the author uses a fact to back up a reason.

ex: If I was trying to prove the existence of aliens I would say "The American Alien association says that 5,007 aliens exist" (That is, of course, not a real fact)