Human factors contributing to accidents are broadly classified into which of the following categories?

The first option is correct because it encompasses key elements that reflect the human aspects influencing accidents, particularly in the context of a fire service or emergency response environment.

Improper attitude refers to the mindset and psychological state of individuals that can lead to risky behaviors or misjudgments during critical situations. For instance, overconfidence can cause a firefighter to underestimate dangers, leading to accidents.

Lack of knowledge or skill highlights the necessity for adequate training and experience. When personnel are not sufficiently trained or do not possess the necessary skills for their tasks, they are more likely to make mistakes that can contribute to accidents.

Being physically unsuited addresses the importance of physical fitness and health in operational roles. If individuals are not in good physical condition or have medical issues that inhibit their ability to perform essential tasks, this can lead to dangerous situations during emergencies where physical capability is crucial.

These categories explain how human factors, including mental readiness, competency, and physical ability, play significant roles in accident prevention within potentially hazardous occupational environments.