Which of the following factors does Heinrich's Domino model identify as a precursor to accidents?

Heinrich's Domino model identifies a chain of events that lead to accidents, emphasizing the role of unsafe acts as a direct precursor to incidents. According to the model, unsafe acts are actions taken by individuals that deviate from established safety practices or procedures, increasing the likelihood of accidents occurring. The model is grounded in the idea that, while there are multiple factors involved in the causation of accidents, it is the unsafe acts—often influenced by underlying factors such as lack of training or organizational culture—that provide the tipping point leading to an incident.

This focus on unsafe acts is crucial because it highlights the need for interventions at the individual level to prevent accidents. By addressing the behavior of workers and ensuring adherence to safety protocols, organizations can effectively reduce the risk of workplace accidents.