The correct answer to this open question is the following.
Although there are no options attached we can say the following.
What inference can you make about the change in the ability to read in Europe between 1471 and 1500?
The inference I can make about that change is that the invention of the print press by German inventor Gutenberg increased the chance for people to learn to read and be informed in a time when the Church practically was the one that could be informed and controlled what the people should know. In other words, the Church took advantage of the ignorance of the people.
With the advent of the print press, many books and documents were printed, increasing literacy in people. They could easily access books.
When people accessed books and information, they could learn and started to question the power of the church. This represented a preamble to the important changes to come during the Renaissance.