Which function involves penetrating or splitting an object?

The function that involves penetrating or splitting an object is severing. This process is typically used in rescue scenarios where access to a victim or freeing an individual from entrapment is necessary. Severing can refer to cutting through materials such as metal or other structural components of a vehicle, allowing rescuers to create an opening or break a connection to facilitate extraction.

In contrast, displacing involves moving an object without breaking it, which is not about penetrating but rather repositioning. Disassembling refers to the breakdown or taking apart of components in a structured manner, and while it may involve separating pieces, it doesn't specifically imply penetration. Distorting relates to changing the shape of an object, which can occur during incidents but does not involve the act of cutting or splitting. Therefore, severing is the appropriate term when focusing specifically on the action of penetrating or splitting an object for rescue efforts.