Final answer:
The third and final stage of an honest employee becoming an embezzler is rationalizing away the criminal nature of their act. Therefore, the correct option is A.
Step-by-step explanation:
The third and final stage through which an otherwise honest employee becomes an embezzler is a. rationalizing away the criminal nature of their act. This means that the employee justifies their actions by coming up with acceptable reasons for their behavior. They may convince themselves that the purpose behind their actions is more important than the moral implications.