Correct Response: A. While Bluetooth® has a theoretical range of approximately 30 feet, many factors in this particular application can reduce the actual range. These factors include power constraints due to small batteries, antenna constraints due to small size, and signal attenuation due to obstacles such as the bodies of other students in the classroom. B is incorrect because Bluetooth® operates independent of local Wi-Fi networks. C is incorrect because Bluetooth® operates independent of cellular networks. D is incorrect because the media volume is adjusted by the student and not by the teacher.
