What did Duane Scrod Sr. do that led to his criminal act?

The correct answer relates to the motivations behind Duane Scrod Sr.'s actions as they connect to an apparent grievance he had. When the dealership refused to service his vehicle, this refusal likely created a sense of frustration or betrayal for him, which in turn may have led him to commit a criminal act as a form of retaliation. His expectation of service from the dealership was unmet, which can be a significant catalyst for anger. This scenario frames the dealership's refusal as a direct trigger for his criminal behavior, aligning his actions with a response to perceived injustice or disrespect.

The other options do not align as closely with a clear motivation for criminal behavior in this context. Losing a bet might ordinarily lead to various reactions, but it isn’t necessarily linked to a direct grievance that would provoke a criminal act. Seeking revenge suggests a calculated decision in response to a specific wrong, which is more aligned with personal vendettas rather than the frustration of service denial. Having his truck stolen does create a sense of loss, but doesn’t directly connect to a criminal act committed by him in response to a perceived failing on the part of the dealership. The denial of service stands out as the clear motivator that led to the subsequent actions.