15th and 16th Century Changes in Society

The Bible is translated into many new languages.
The Protestant Reformation spreads throughout Europe.
The number of literate and educated people increases.
The practice of medicine becomes more standardized.

Which of the following explains a contributing cause shared by all of these events?
A.
Johannes Gutenberg invented the printing press in 1439.
B.
Christopher Columbus sailed to San Salvador Island in the Bahamas in 1492.
C.
Nicholas Copernicus proposed that the Earth orbits the Sun in 1514.
D.
Joan of Arc joined the Siege of Orleans in 1429.

A. Johannes Gutenberg invented the printing press in 1439.