How were Italian scholars able to rediscover ancient Roman and Greek works?

By Researching ancient ruins

Explanation:

In order to have better understanding on history, many Italian Scholars set up several anthropology expeditions to study the ancient ruins that were left over by the empires in the past.

From this expedition, they managed to find various types of artworks, literature, scripture, etc.

All of those things above often contained information's that the scholars can use to decipher  Roman and Greek's society situation in the past. They served as pieces of puzzles that complete their knowledge about their history.

the answer is d.index

yes he did writing dots to make the answer