Answer: Negative effect spreading out from her frustration extracted by person in front of her.
Explanation:
Frustration-aggression hypothesis is the concept in which frustration is caused by any situation or person urges to create aggressive response and thoughts. Frustration is priory present due to annoying condition or situation in which patience leave the mindset.
According to the question,Samantha is aggression as per theory of frustration aggression because frustration of standing in line for long has negative impact on her which extracts out shouting response on person in front of her as aggression urge.
