Explanation:
What helped scholars determine that the demotic language was related to the Egyptian language?
Based on details in The Riddle of the Rosetta Stone, what event helped scholars determine that the demotic language was related to the Egyptian language? Examples of the demotic language previously appear on rolls of papyrus. The scholars call it demotic, meaning "of the people."
The answer is most likely D
The best possible answer would seem to be C.