Which of the following is classified as an explosive obstacle?

The classification of an explosive obstacle encompasses devices and situations that serve to impede movement and cause destruction through explosive means. Each of the options listed is recognized in military contexts as an explosive obstacle, making the choice of all of the above correct.

Unexploded Ordnance (UXO) refers to ordnance that has been fired, dropped, launched, or otherwise delivered but remains unexploded. This presents a significant danger, especially in conflict zones, as they can be triggered by movement or other disturbances, thereby serving as a hazardous obstruction.

Mines and minefields are specifically designed to be explosive obstacles. Mines can be placed in various locations and are engineered to detonate when a vehicle or individual comes in contact with them, creating a barrier that deters or destroys the enemy.

Improvised Explosive Devices (IEDs) are also meant to serve as explosive obstacles. These devices are often constructed using various materials and can be set to detonate by pressure, remote control, or other means. Their unpredictable nature makes them particularly dangerous and effective as a form of obstruction.

All these elements together illustrate the diversity in types of explosive obstacles employed in warfare, hence the choice encompassing all of them is accurate. Each serves the purpose of hindering enemy movement and causing