Final answer:
The invention of the printing press by Johannes Gutenberg in 1450 marked the beginning of the Renaissance. The printing press revolutionized communication, allowing for the quicker and wider spread of ideas throughout Europe.
Step-by-step explanation:
The correct answer is c. Printing Press. The invention of the printing press by Johannes Gutenberg in 1450 was a significant milestone that marked the beginning of the Renaissance. The printing press allowed for the quicker and wider spread of ideas, revolutionizing communication throughout Europe. It enabled the printing of books and pamphlets, including works of criticism against the church and classical texts that helped ignite the Renaissance.