Based on The Riddle of the Rosetta Stone, what role did Sylvestre de Sacy play in Jean-François Champollion’s career?

Sylvestre de Sacy was a scholar Champollion studied with. De Sacy had already tried to decipher the Rosetta Stone’s writing, but he had not solved it; Champollion later made the breakthrough. So the correct choice is “Champollion studied with de Sacy, who had already attempted to decipher the writings on the Rosetta Stone.”

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