If the input status indicator turns on and off while the input device is operated, what can be concluded?

When the input status indicator turns on and off in alignment with the operation of the input device, it indicates that the device is actively communicating its status. This behavior suggests that the input device is correctly functioning by sending the appropriate signals to the indicator. The ability for the indicator to respond in real time reflects the normal operation of both the input device and the indicator itself.

The other choices imply issues with the input device or the indicator. If the device were malfunctioning or needed replacement, we would expect inconsistent or erratic signaling, perhaps with the indicator not responding correctly. A faulty indicator would also produce irregular results independent of the actual function of the input device. However, since the indicator's changes correspond with the operation of the input device, it demonstrates effective communication and operation, reinforcing that the device operates properly.