This question answers itself.
The author's purposelessness
The purpose of an advertisement is to persude consumers to buy a product or service.
to appeal to the readers physical experiences
to entertain the readers
to tailer your appeal to your intended readers
To entertain readers about a adventure/thriller/romance. To inform readers about what could happen if war continues throughout the world.
Answer this question… It allows readers to evaluate a source for themselves.
The purpose of a news article is to inform readers about current events, trends, and issues in an objective and factual manner. News articles aim to provide readers with important information and keep them updated on what is happening in the world around them.
the pourpous of twilight is to entertain readers. just the same as harry poter/
A newspaper article
To let readers know if a play is worth seeing
provide background to help readers understand the narrative