Answer :
All of these are reasons that an author would use description in a literary work. Description is a great way to make writing more vivid, no matter what the device is.
I, II, and III
When description is used in literature, it can be used for all three of the above. For instance, when an author wants to illustrate the distinctive nature of a character, description is used to mention the character’s features (characteristics). When an author wants to foreshadow upcoming events, description is used by the manner of providing detailed hints and indications in order for readers to appropriately be able to anticipate what is about to happen. And, clear descriptions of people, places, and things can be used in order to provide the clearest possible images for readers.