Answer: Evidence and research to back up whatever you're saying
Explanation:
you cant go show a essay to your teacher with no evidence, especially if its non fiction
for example, you show your teacher how dogs are better than cats. your nonfiction isnt a "nonfiction essay" without evidence, you cant show your teacher your nonfiction essay about how dogs are better than cats that only says "dogs are better than cats because i said so" you can use evidence from studies about how cats and dogs behave or you can use reference from your own personal experiences with cats and/or dogs
sorry if this is really bad, i hate writing
