Answer:
B) Frustration-aggression theory.
Explanation:
Frustration-aggression theory best explains Joan's behavior. Stated by Dollard, Doob, Miller, Mowrer, and Sears (1939) this theory claims that the interference of a goal causes frustration. Frustration leads to some form of aggression. There is always some kind of frustration in aggressive behavior. Joan's frustration for not getting the new water pistol of the local store makes her act aggressively to Jane and punch her in the stomach.