What incident is illustrated by a worker being electrocuted after opening a car door with a fallen power line nearby?

The scenario of a worker being electrocuted after opening a car door near a fallen power line highlights the dangers associated with contact with overhead power lines. In this context, the worker is exposed to a situation where high voltage electricity is present due to the fallen power line, creating a risk of electric shock.

When overhead power lines are down, they can energize nearby objects, including vehicles, and create a hazardous situation even if contact with the line itself does not occur. The act of opening the car door can create a pathway for electrical current, especially if the vehicle is conductive. This incident underscores the critical importance of being aware of one's surroundings, particularly in situations involving high voltage lines, and the need for appropriate safety measures when working in proximity to potential electrical hazards.

While other options might relate to safety precautions or equipment integrity, the direct cause of electrocution in this scenario is the danger presented by the nearby overhead power line.