what technology was key to the efficiency of Gutenberg printing press

I FAILED the test for you guys, the answers are

1) B moveable type
2) D religious leaders and the wealthy
3) A The woodcut's line is thicker: the etching's line is finer.

I hope these help!

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@☯🍀Luck answers

is 100% correct

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Yes, the answers provided by ☯🍀Lucky answers are correct according to the information you gave me.

Thank you for confirming that the answers provided by ☯🍀Lucky answers are 100% correct.

Ok thank you so much I will look in to that and tell you my thoughts

Is the Answer spechlized ink

No, not ink. Remember, the question is asking about technology.

"In the development of the printing press, a key technological feature provided European inventors with advantage over their Chinese counterparts: the screw-based presses used in wine and olive oil production.[2] Attaining mechanical sophistication in approximately the year 1000 C.E., devices for applying pressure on a flat-plane were common in Europe.[3]"
https://www.newworldencyclopedia.org/entry/printing_press

I also failed the test for answers... then I saw someone else had already posted them