The answer is C: the Counter Reformation
They had the Counter Reformation to stop all of the Catholics from leaving the Catholic Church. They got rid of a lot of their crazy rules in an attempt to save their church.
Hope this helps!
Answer:
I believe the printing press. Before the printing press books were very rare and expensive. Most religious scrolls were put on cloth or papyrus(a type of plant). After the invention of the printing press it made books less rare and expensive. And launched the world into a more modern era.