How many valence electrons occupy σ‑bond orbitals, and how many occupy π‑bond orbitals?

2.a rent payment4.renters insurance5.a security deposit6.utility paymentsare the correct  answers

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.