A)the door-in-the-face effect.
B)the fundamental attribution error.
C)the self-serving bias.
D)diffusion of responsibility.
Answer: Tim is demonstrating: THE FUNDAMENTAL ATTRIBUTION ERROR.
Explanation: The fundamental attribution error also known as the correspondence bias or attribution effect explains the process by which individuals explain the causes of behaviour and events. In the fundamental attribution error, people under-emphasize situational explanations for an individual's observed behavior while over-emphasizing dispositional and personality-based explanations for their behavior.