Beto is writing a literary analysis and reads this passage from the riddle of the rosetta stone. before the rosetta stone was discovered in 1799, no one knew how to read egyptian hieroglyphic writing. its meaning had been lost for almost 1400 years. but countless visitors to egypt over the centuries had tried to decipher the mysterious symbols. this is the story of their attempts, and of how the rosetta stone finally enabled scholars to unlock the egyptian past. which thesis best fits into beto’s essay? a. expert scholars used the 1799 rosetta stone discovery to unlock puzzling information. b. hieroglyphics are mysterious symbols that were not understood until the discovery of the rosetta stone. c. giblin successfully proves that it took nearly 1,400 years and countless visitors to uncover the hidden location of the rosetta stone. d. giblin successfully proves that with the discovery of the rosetta stone, the ancient art of hieroglyphic writing became less mysterious.