What does a yellow traffic light indicate?

Answer: B — Caution, prepare to stop

A yellow traffic light indicates caution and signals drivers to prepare to stop. This light serves as a warning that the signal is about to change to red, and it advises drivers to slow down and be ready to halt at the intersection. The intention is to ensure safety and allow adequate time for vehicles to clear the intersection before the light turns red. The rationale behind this alert is to prevent confusion and reduce the risk of accidents. Drivers who see a yellow light should assess their speed and the distance to the intersection and decide whether they can stop safely or if they have enough time to proceed through before the light turns red. In this context, the other options do not accurately reflect the purpose or meaning of a yellow traffic light. Statements suggesting to "go faster" or "turn left or right" misinterpret the function of the warning signal. Stopping if you can, while generally a reasonable response, does not capture the primary directive of caution and preparation to stop, which is emphasized in the correct answer.