Which of the following is a way to have a driver's license suspended?

Having a driver's license suspended is a serious consequence that stems from specific traffic violations, and driving under suspension is one of the most significant offenses that can lead to this outcome. When a person is found to be operating a vehicle while their driver's license is already suspended, it indicates a disregard for traffic laws and safety. This action not only violates the legal restrictions placed on the individual but also puts others at risk. Consequently, the legal system responds with strict penalties, including potentially extending the suspension or imposing additional sanctions.

In contrast, the other scenarios, such as failing to wear a seatbelt, not signaling while turning, or driving with a learner's permit, do not typically result in a suspension of the driver's license. They may incur fines or points on the driving record, but they do not carry the same severity of repeat offenses or legal repercussions associated with operating a vehicle while already under suspension.