Question

What is a characteristic of a reliable fact-checking site?

It is run by professional journalists and fact-checkers.
It provides fact-check sources that support one side of an issue.
It is partisan in how and what it chooses to fact-check.
It requires its own facts to be fact-checked by other sources.

Answer 1

I think it would be

It requires it own facts to be fact-checked by other sources.

Answer 2

It requires its own facts to be fact-checked by other sources.