Answer:
d. frustration-aggression principle.
Step-by-step explanation:
Frustration-aggression principle: In psychology, the term frustration-aggression principle or theory was first introduced by Sears, Dollard, Mower, Doob, and Miller during 1939. The theory or principle describes that an individual who faces frustration will often lead to display certain aggressive behavior.
Therefore, it is not necessary that frustration will lead aggression always so, an individual tries to suppress it a lot of time as he or she feels that it is not ethical or right or maybe he or she fears to face the social results of getting aggressive.
In the question above, the given statement represents the "frustration-aggression principle or theory.