What does a yellow traffic signal indicate?

Answer: B — Clear the intersection, as the light is about to change to red

A yellow traffic signal primarily indicates that the light is about to change to red, which serves as a warning for drivers. The purpose of this signal is to alert drivers that they should not enter the intersection as the light will change soon, rather than encouraging them to accelerate through it. It's crucial for drivers to recognize that a yellow light does not mean to speed up; instead, they should prepare to stop safely if they can do so without entering the intersection after the light changes. This understanding helps maintain safety on the roads for both drivers and pedestrians. In this context, while clearing the intersection might be a logical action if someone is already within it when the light turns yellow, the primary interpretation of a yellow light is preparation for the impending red signal. This reinforces responsible driving behaviors and adherence to traffic laws.