Answer: like de Sacy and earlier scholars, he believed the hieroglyphs represented things, not sounds"
Step-by-step explanation:
The remainder of the question is:
Which line from the passage shows how de Sacy's and Champollion's ideas were the same?
The line from the passage that shows that the ideas of de Sacy and Champollion were the same is "like de Sacy and earlier scholars, he believed the hieroglyphs represented things, not sounds"
This indicates that they both had thesame opinion with regards to the hieroglyphs.