Trevor reaches his office at least twenty minutes after the reporting time every day. He also usually exceeds the deadlines of the projects assigned to him. One day, he finds that his teammate has been given a promotion, whereas he is not given one. Trevor is upset. He tells himself that his manager is biased toward his teammate and that the promotion was unjustly given to his teammate. In the context of the psychodynamic approach, which defense mechanism is trevor most likely using?.