Which of the following activation methods is commonly associated with IEDs?

Victim-operated activation is a common method associated with IEDs because this technique involves the device being triggered by an individual inadvertently activating it, often during normal activities or operations. This is particularly troublesome because it targets unsuspecting victims, such as military personnel or civilians who may encounter the device in their environment.

In contrast, the other options do not reflect typical IED activation methods. Manual activation may imply that a person must deliberately trigger the device, which tends to be less common for IEDs intended to cause maximum disruption and harm. Visual signaling is not a widely recognized method for traditional IED activation and relies on visible prompts that may not be practical in many operational scenarios. Remote resetting does not reflect an activation method for IEDs; it suggests a capability to reset or alter a device remotely, which diverges from the immediate and reactive nature of triggering a device. Therefore, victim-operated activation stands out as the choice most closely aligned with the prevalent activation strategies employed by IEDs.