The most far-reaching consequence to Europe from the Black Death was a change in the basic structure of medieval society. Option C is correct.
The Black Death was a very severe and devastating pandemic which claimed the lives of roughly 75 to 200 million people in Eurasia. It was also known as the Great Plague.
This pandemic is believed to have derived from dry plains of Central Asia causing the death of 30% to 60% of Europe's population..