What are the primary risks associated with booby-traps?

The primary risks associated with booby-traps stem from their potential to cause severe injuries. Booby-traps are designed to be deceptive and can unpredictably inflict harm on anyone who inadvertently triggers them. This includes not only the intended target but also bystanders or individuals who may not be aware of their presence. The mechanism of a booby-trap, whether it is explosive, mechanical, or involves other hazardous materials, can lead to life-threatening injuries, permanent disabilities, or even fatalities.

Considering the other options, while it can be argued that some may view booby-traps as warnings or that they might add a certain element to an environment, these perceptions do not outweigh the inherent dangers they pose. Additionally, the notion that booby-traps can be easily disarmed contradicts their typical design, which is meant to be hidden and trigger unpredictably. Thus, the emphasis on the threat they pose to safety solidifies the reasoning behind the choice that highlights the severe injury aspect.