Heinrich's domino theory of accidents emphasizes which of the following aspects?

Heinrich's domino theory of accidents primarily emphasizes the social factors associated with accidents. The model illustrates that accidents are the result of a series of factors, represented as dominoes in a row, where the initial factors are related to societal and psychological elements. The first "domino" reflects social factors such as people's behavior, attitudes, and experiences that can lead to unsafe acts. This theory suggests that addressing these social aspects can prevent accidents before they occur.

By acknowledging the role of social factors, Heinrich's theory aligns with the understanding that accidents are not just a result of physical conditions or technology failures, but significantly influenced by human behavior and the broader social environment. This highlights the need for a proactive approach in safety programs that address not only physical hazards—like workplace conditions or equipment—but also the underlying social and psychological dynamics affecting worker behavior and safety choices.