What does a signal indicating stopping require from drivers?

Answer: C — To come to a halt

A signal indicating stopping requires drivers to come to a halt, which is crucial for ensuring the safety of all road users. When approaching a stop signal, whether it's a traffic light turning red or a stop sign, drivers must bring their vehicle to a complete stop before proceeding. This action allows for the safe flow of traffic and enables other vehicles and pedestrians to navigate the intersection safely. Yielding, while important in certain driving scenarios, does not imply a complete stop. Continuing to drive or changing lanes in response to a stop signal would violate traffic laws and could lead to serious accidents. Stopping ensures compliance with the rules of the road, so drivers can assess their surroundings and proceed safely when it is clear to do so.