The character ,Jimmy has change he breaks the safe in the bank so that he can save the life of the little girl.Spencer sees this act as a proof that Jimmy has changed
Step-by-step explanation:
"A Retrieved Reformation" is a short story written by the famous American author O. Henry .In this story the author talks about the reformation of the main character jimmy who is a criminal(i.e. a professional safecracker) into a honest man but at the end of the story jimmy's reformation is threatened when his criminal past is reveled in a an attempt to save a little girl who is locked in the vault.
Thus we can say that
The character ,Jimmy has change he breaks the safe in the bank so that he can save the life of the little girl.Spencer sees this act as a proof that Jimmy has changed