In the context of the Internet of Things (IoT) and abstraction, the correct answer would be:
A smart drier has sensors that stop the drier when no moisture is detected in the clothes.
This option illustrates abstraction in IoT technology because it involves simplifying the user's interaction by using sensors to automatically control the drier's operation without the user needing to monitor the moisture levels manually. The technology abstracts away the complexity of moisture detection and drying process management.