How does the organizational structure of the passage support the author's purpose? When our local library was founded, it had a small collection of books, a couple of comfortable chairs for reading, and that was it. If you needed to find a particular title, you had to look it up in a paper card catalog. Gradually, the library added newspapers and magazines to its shelves. Soon audiobooks, music CDs, and movies began to appear in the library as well, and the catalog went online. Today, one of the most important features of the library is its computer lab. Now, with the touch of a keyboard, library visitors can access ideas and information from all over the world

A. To inform the reader of what the library has to offer, the author uses a proposition-and-support structure that gives examples of the resources in the library's collection.

B. To persuade the reader that libraries today are better than ever before, the author uses a chronological structure that illustrates improvements to the local library.

C. To inform the reader how the library has changed, the author uses a chronological structure that lists the reading, entertainment, and research materials that have been added over the years.