Conclusion: Predictions that printed books will soon be replaced by books in electronic formats such as CD-ROM are exaggerated
(A) Scholars and scientists find an electronic format for books the most convenient one for quick searching and cross-referencing.
Incorrect, this is of
no impact for the conclusion, we already know from the argument that scholars and scientists find electronic format more convenient.
(B) Publishers will continue to print books in the format stocked by bookstores and public libraries.
Correct, this strengthens the argument, this increases our confidence that printed books will remain in libraries.
(C) Scholars and scientists do not usually conduct their research in public libraries.
Incorrect, they anyway prefer electronic format so this option doesn't impact our confidence in the conclusion.
(D) At some bookstores and libraries, the popularity of books on tape and of videos is beginning to rival that of printed books.
Incorrect, this weakens the conclusion.
(E) Some members of the general public prefer to purchase books in an electronic format rather than borrow them from the library.
Incorrect, this weakens the conclusion, however, magnitude can be very small due to indeterminate "some".