Which reason would an author most likely have for using description in a literary work?

Hello,

An author may use description in a literary work to give detail and to burst the imagination of the reader. The author might use description to reveal his or her's opinion about a situation. Another reason could be to foreground the importance of an event. 

Faith xoxo

It is to persuade someone(make them think it’s is right ) to them understand why it is right