Which sentence from the passage highlights the reason why there were so few books before Guntenberg? a. Large monasteries had rooms called scriptoria where monks copied manuscripts — all by hand b. Before Gutenberg's invention, there were perhaps 30,000 books in all of Europe. c. Gutenberg's invention is, in fact, often described as the beginning of the information age. d. In Medieval times, books were about religious topics only; the printing press enabled the printing of the so-called “lost works” of classical Greece and Rome.
