Answer:
The author's purpose for "The Challenge" is to "entertain" readers.
Explanation:
When writing a story, the author sets his/her purpose of either entertaining, persuading or informing readers. "The Challenge" is an example of a story that entertains because it tries to capture the attention of the readers in the character of Jose. Jose wanted to get Estela's attention, thus, he challenged her to a racket ball game.
Unknowingly, Estela beat Jose in the game. This keeps the readers wanting to know more on what's going to happen next. If the reader is a boy, he may pretend to be Jose while if the reader is a girl, she may pretend to be Estela. Since such events are possible to happen in the life of the readers, it can then be classified as entertaining.
So, this explains the answer.