Answer: Writers attempt to persaude you by bringing up a problem you may be dealing with and telling you how their product, idea, concept, etc. will aid in addressing that problem. They may also try to persuade you by using language similar to that of the target audience.
To inform or teach the reader, the author uses expository writing. An author's purpose is reflected in the way he writes about a topic. For instance, if his purpose is to amuse, he will use jokes or anecdotes in his writing. Clues to an author's purpose may be found in titles, prefaces, and the author's background.
