Need help ASAP I will mark and pic attached

It’s the magnet cause it is the only one that can pull something in or push away without being to close

The magnet is the correct answer !

But isn’t this a question asking ur opinion this is something about u. ( well i would pick somewhat true bc that’s what i do when i don’t know what to choose ) hopefully this =“)

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.