Which sequence of events affecting moist air within earth’s atmosphere causes cloud formation?
(1) rising expanding cooling condensation
(2) rising contracting warming evaporation
(3) sinking expanding warming condensation
(4) sinking contracting cooling evaporation

The question is asking to choose among the following choices that states the sequence of events affecting moist air within Earth's atmosphere causes cloud formation and in my further research, the answer would be (1) rising expanding cooling condensation. I hope you are satisfied with my answer and feel free to ask for more 

Master planned communities outside of chicago. note: population density means people living in an area per square mile. chicago, an urban and highly populated area has a much more higher density than a desert, amish community, settlement, or nomadic region.

The answer is b im not sure