What should be applied to possessives

“nonfiction dates back to about 40,000 years ago with the first cave paintings. they described actual events that were true records of hunting or fishing trips. most of the historical non-fiction produced came in the form of legal documents, records, and other less than interesting writings, the non- fiction of today can include creative non-fiction, journals, autobiographies, memoirs, diaries, diagrams, travelogues, essays, and many other forms that generate interest.” which of the following is an example of a modern work of non-fiction? a. memoirs c. legal records b. cave paintings d. all of the above