If traffic signal lights stop working, you must . A. stop if needed to yield to the cross traffic B. stop at the intersection and then proceed when it is safe C. slow down and proceed carefully

B. stop at the intersection and then proceed when it is safe

Explanation:

If the traffic light stops working then you should stop the car or vehicle at the intersection and the proceeds when it's safe and wait for the signal to get green again. As it controls the traffic flows but not the direction and thus care must be taken to the procedure in safety and with precaution. Thus a signal indicates of the traffic and must be taken seriously.