Question

Read the excerpt from The Riddle of the Rosetta Stone.

These were impressive achievements. But Akerblad’s success in identifying so many demotic characters now led him to make a serious mistake. He became convinced that the demotic script was entirely alphabetic. From then on Akerblad, and other scholars like him, made no further progress in deciphering the demotic passage on the Stone.

Based on this excerpt, James Cross Giblin believes Akerblad was overly

confident.
determined.
ambitious.
enthusiastic.