Answer:
presents an idea to the reader.
Explanation:
An author is the writer of book or an article. An author's message is usually presented before the main book content. The author's message is meant to give the reader an idea of what the story or book is about in a very short yet concise manner. This message is important for reasons including, buyers who really want to know what the content of the book they are about to pick is, they simply cannot read the entire book on the spot, However. with the author's message, they have an idea of what's in the book albeit in summary. Once the author's message is read, an idea of the book's content is understood.
