How is the Rosetta Stone key to moden-day understanding of ancient Egypt? O The Rosetta Stone outlined ancient Egypt's social hierarchy
O The Rosetta Stone allowed for the interpretation of hierogtyphs.
O The Rosetta Stone contained a timeline of Egyptian dynasties.
O The Rosetta Stone provided a map of the pharaohs tombs.

Correct answer is  The Rosetta Stone allowed for the interpretation of hieroglyphs.

Explanation:

Until the 19th Century it was impossible to decipher the hieroglyphs. But, then when the Rosetta Stone was discovered everything has changed. Except the hieroglyphs Rosetta Stone has the translation into Ancient Greece, and therefore it enabled historians to translate them.

With the interpretation of hieroglyphs it was easier to discuss about everything that was related with history of Ancient Egypt.