88M Red Book AIT Practice Test

The three types of IED initiating systems are indeed radio controlled, command wire, and victim operated. Radio-controlled IEDs are triggered using a remote device, allowing the person to detonate the device from a distance, which increases safety for the operator. Command wire IEDs require a physical connection, often through wires, that enable the detonator to be activated directly by an operator, often resulting in more precise control. Victim-operated IEDs are designed to trigger when an unsuspecting individual interacts with the device, often leading to unintentional detonation by the targeted individual or group.

The other options represent different categories or methods that may relate to explosives or other devices, but they do not accurately categorize the initiating systems of IEDs as recognized in military and explosive ordnance industries. It's essential to understand the specific classifications to effectively identify and respond to these threats in a practical context.