Which system uses a camera to guide a target?

The answer is the Electro Optical - TV system because this type of guidance is specifically designed to utilize cameras for target identification and guidance. Electro-optical systems incorporate cameras and sensors that capture and process visual information, allowing for real-time imaging and analysis of the target. This capability enables precise targeting as the camera can track the movement of the target and provide necessary feedback for adjustment, making it a critical tool in modern warfare and surveillance operations.

Other options, while relevant to target tracking and guiding, do not primarily rely on camera technology. Radar systems use radio waves to detect and locate targets but do not visualize them like a camera does. Guidance systems can refer to various types of navigation and control systems, not exclusively utilizing camera input. Tracking camera systems, although they also involve cameras, are typically narrower in function compared to the broader application of Electro Optical - TV systems, which encompass various electro-optical techniques.