Predictions that printed books will soon be replaced by books in electronic formats such as CD-ROM are exaggerated. While research libraries may find an electronic format more convenient for scholars and scientists, bookstores and public libraries will stock books in the format desired by the general public, which will be something other than an electronic format. Which one of the following, if true, most strengthens the argument? ['At some bookstores and libraries, the popularity of books on tape and of videos is beginning to rival that of printed books.', 'Publishers will continue to print books in the format stocked by bookstores and public libraries.', 'Scholars and scientists do not usually conduct their research in public libraries.', 'Scholars and scientists find an electronic format for books the most convenient one for quick searching and cross-referencing.']