Final answer:
The signal aspect that corresponds to the options given is Stop. A traffic signal with a red light indicates that drivers should come to a complete stop and not proceed.
Step-by-step explanation:
The signal aspect that corresponds to the options given is 2) Stop. A traffic signal with a red light indicates that drivers should come to a complete stop and not proceed. This is important for ensuring safety and controlling the flow of traffic at intersections.
For example, when you approach a traffic signal and see a red light, you should stop your vehicle behind the designated stop line or crosswalk until the light turns green.