Same for this. Match the letters to the numbers. Please answer below cannot open any links. This is for an exam and i need help. Thank you and please !!!

Your answer is d.all of the above! hope this ! : )

Student have 20 minutes to complete the aspire reading test

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.