Which innovative product development approach by Johannes Gutenberg in the 1450s revolutionized access to religious texts?

Religious texts, artifacts, and symbols are some of the most recognized 'products' in human history. Behind many of these items are fascinating stories of development, innovation, and branding that have helped shape religious practice for centuries. This trivia question explores a pivotal moment in religious product development that transformed accessibility and spread of spiritual teachings. Test your knowledge about how religious materials evolved from exclusive to mainstream.

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The printing press with movable type that made mass production of Bibles possible
The introduction of illuminated manuscripts with gold leaf decoration to attract wealthy patrons
The development of scriptoriums where monks could copy texts in assembly-line fashion
The creation of pocket-sized prayer books with simplified language for common people