What does an amber (yellow) traffic light indicate?

Answer: B — Proceed with caution

An amber (yellow) traffic light signals that the light is about to change to red, indicating that drivers should proceed with caution. This means that if a vehicle is already in the intersection or close enough to it that stopping might pose a greater risk, it is often safer to continue through the intersection rather than making a sudden stop. The amber light serves to alert drivers to the upcoming change and allows them to adjust their speed accordingly, ensuring they can navigate safely through the intersection while remaining vigilant for any changes in traffic conditions. While the other options suggest immediate stops or safety, they do not accurately reflect the intent of an amber light, which is to signal caution and prepare for possible changes in traffic flow without requiring an abrupt halt unless necessary for safety.