(B) Internet of Things (IoT)
Controlling appliances remotely using an internet-enabled device is an example of the Internet of Things (IoT).
IoT refers to connecting physical devices/appliances to the internet so they can be controlled or monitored remotely. The key clue in the question is "remotely using an internet enabled device" — this points directly to IoT, not AI, CV, or DL. Note: The source passages provided do not cover this topic, but the correct answer is standard CBSE curriculum knowledge.