Read the excerpt from The Riddle of the Rosetta Stone by James Cross Giblin. However they obtained it, the Greeks couldn’t resist adding their own original "explanations" to the definitions. For example, a Greek writer named Horapollo said correctly that the picture of a goose stood for the word "son." But then he explained that this was because geese took special care of their young, which was completely inaccurate.

Which part of a strong argument is the final sentence of the excerpt?

the counterclaim
the evidence
the reason
the claim