Respuesta :
Answer: change “mortifying” to “mortified.”
To "mortify" someone is to humiliate him, or to hurt his self-respect. In this case, the meaning of the sentence is not that the writer decided to "mortify" others, but that his own pride was hurt. Therefore, the correct word to use in this case, is "mortified" (to describe the state of the writer) and not "mortifying" (to describe his actions).