How is literary nonfiction unique from other types of nonfiction?
It includes more information in a shorter amount of space.
It uses elements and devices more common in fictional stories.
It does not use imagery, while other types of nonfiction do.
It has a distinct voice, unlike most other types of nonfiction.
Literary nonfiction uses elements and devices, the way that fiction does usually, where as normal nonfiction doesn't use stylistic approaches as much. The second answer would be the correct one.