Answer:
Fundamental Attribition Error
Step-by-step explanation:
The fundamental attribution error is the tendency people have to overemphasize personal characteristics and ignore situational factors in judging others' behavior.It is also refferd to as attribution effect or correspondence bias , is the propensity for people to under-emphasize situational explanations for an individual's observed behavior while over-emphasizing dispositional and personality-based explanations for their behavior. Obviously, Ethans perception of Brett is that of fundamental attribution error because, Ethan is trying to explain Bretts behaviour based on Bretts personality underestimating the effect of external factors like traffic jam that made Brett miss an important meeting with his potential client.