A truck carrying explosives has crashed with another vehicle. You should not pull them apart until:

When dealing with a crash involving a truck carrying explosives, the most critical safety consideration is to minimize the risk of ignition or detonation. The correct response emphasizes the need to move the explosives at least 200 feet away from both the vehicles involved in the crash and any occupied buildings. This distance is a standard safety measure designed to protect individuals and property from potential harm in the event of an explosion.

Moving the explosives to a safer distance can significantly reduce the risk of injury or fatalities. This protocol is particularly important in hazardous material situations, where the materials involved pose significant risks.

The other options, while they may suggest some form of caution, do not address the immediate and essential requirement of ensuring a safe distance from potential hazards. The presence of a shipper's loading foreman or waiting for a specific amount of time without relocating the explosives does not provide the necessary immediate action to mitigate risk. Thus, establishing distance is the primary focus for safety in this scenario.