In writing, common purposes in texts include to inform, to entertain and to narrate that mainly depends on the objective and author has with a text and the information included on it. In the case of texts whose purpose is to persuade, these texts aim at convincing the reader to believe or support a certain idea or take a certain action that is suggested by the author and usually supported with reasons. This is the case of the passage presented as the author of it "If you are looking for a pet, you should consider getting a Guinea pig" that suggests the main purpose of the author is to convince readers to get a Guinea pig and not other pet, also the author provides details such as "clean and easy to care for" that give reader reasons to support the idea of the author. Therefore, the passage is a clear example of a text used with the objective of persuading.
