Answer: The right answer is "moving from the details of the individual hieroglyphics to the big picture of hieroglyphics being both representations of sounds and symbols."
Explanation: Just to elaborate a little on the answer, in this excerpt from James Cross Giblin's entertaining account of the discovery of the Rosetta Stone and its translation by French historian Jean François Champollion (1790-1832), the narrator is pointing out that reflecting upon the hieroglyphs further gave Champollion a chance to understand that, far from simply representing the sounds that identified the names of the pharaohs, or, as some scholars thought, having solely a symbolic meaning, hieroglyphs were both sounds and symbols. He, therefore, advanced the knowledge on the spoken language of ancient Egypt.
The correct answer is 16 using the converse of the Pythagorean theorem
