Final answer:
The main causes of struck-by hazards include all of the above.
Thus (option 4) is right answer.
The main causes of struck-by hazards include all of the above; falling objects, moving vehicles, and flying debris. These hazards are significant and can lead to serious injuries or fatalities across different environments.
Step-by-step explanation:
The main causes of struck-by hazards include all of the above: falling objects, moving vehicles, and flying debris. Thus (option 4) is right answer.
These hazards are prevalent in various environments and can lead to significant injuries or fatalities. Falling objects could be anything from construction materials on a building site to tools dropped from a height. Moving vehicles pose struck-by risks in traffic, construction zones, and even in pedestrian areas.
Flying debris, which could result from industrial activities or natural events like storms, can strike with enough force to cause serious harm. For instance, during weather-related disasters, the force of the wind can turn common objects into dangerous projectiles. Other risks include thermal hazards from extreme heat or cold and electrical shocks, which vary in severity and can be life-threatening.