Use the drop-down menu to answer each question. Which of these countries was not a Communist country in 1991? Which country had the largest increase in per capita income between 1996 and 2012?.

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.

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is this a serious question? let me know!

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What are the options or answer choices.