According to psychologists, frustration occurs when 

A) feelings of anger are aroused.
B) the pursuit of some goal is thwarted.
C) incompatible motivations are activated.
D) individuals perceive subjective threat.

Frustration occurs when individuals are unable to reach their desired goal due to some obstruction or obstacle. This can lead to feelings of disappointment, irritation, and sometimes anger. The feeling of frustration can trigger a variety of coping mechanisms, which can either be constructive or destructive depending on how the individual deals with the situation.