The correct answer is: C. social cue.
An anthropomorphic device is a device that is designed to look and act like a human. One of the ways that anthropomorphic devices can interact with humans is by using eye gaze. Eye gaze is a powerful social cue that can be used to communicate attention, interest, and engagement. When an anthropomorphic device aims its gaze at a human, it is sending a signal that it is paying attention to the human and is interested in what the human has to say. This can help to build rapport between the human and the device, and can make the interaction more natural and engaging.
The other options are incorrect because they are not social cues. An interpreter is a person who translates spoken or written language from one language to another. A media device is a device that is used to consume media, such as a television, computer, or smartphone. A transmitter is a device that sends out signals, such as a radio or television station.