The author's purpose is the reason why the author writes a text. It can be to inform, persuade, entertain, or explain.

To inform means to provide information or facts about a topic.

To persuade means to convince the reader to adopt a certain viewpoint or take a specific action.

To entertain means to provide enjoyment or amusement through storytelling or engaging content.

To explain means to make something clear or easy to understand by providing details.

An example is a textbook that provides facts and information about a subject.

An example is an advertisement that tries to convince you to buy a product.