Which of the following was the most important invention during the renaissance?

printing press
astrolabe
clock
compass

The invention of the printing press by the German goldsmith Johannes Gutenberg (1398–1468) is widely regarded as the single most important event of the second millennium, and is one of the defining moments of the Renaissance. So the answer would be A.Hope I Helped : )

The best and most correct answer among the choices provided by the question is the first choice "printing press"

The invention of the printing press by the German goldsmith Johannes Gutenberg (1398–1468) is widely regarded as the single most important event of the second millennium, and is one of the defining moments of the Renaissance.

I hope my answer has come to your help. God bless and have a nice day ahead!

They were eliminating problems caused by industrialization, urbanization, immigration, and corruption in government