Answer: entertain
Explanation:
Although he can have more than one purpose, the author’s purpose can be to inform, to entertain, or to persuade.
When the purpose is to entertain, an author can use humor, strong imagery, suspense, surprises, describing emotions thoroughly, adding elements of fantasy, and building characters to whom the reader can relate to.
In this case, the story will probably full of emotional moments and characters that seem real.