Passage: 'Around 1440, Johannes Gutenberg developed a printing system in Mainz that used movable metal type. Before this invention, books were copied by hand, which took months and made them costly. With the press, a printer could produce hundreds of identical copies far more quickly. Literacy spread, ideas travelled faster, and the price of books fell, changing education and science in Europe.' What is the main idea of the passage?

Answer and explanation

Correct answer: B. Gutenberg's printing system changed how books were produced and spread knowledge

The passage describes the invention and its effects.

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Passage: 'Around 1440, Johannes… | TOEFL ITP Indonesia