Why is 4 the correct answer to number 21 ? explain why and answer this

The table below describes geological events. event boundary where they occur convergent divergent transform a yes no no b yes yes no which statement is most likely correct? answers: 1). event a represents earthquakes and event b represents the formation of ocean basins. 2.) event a represents the formation of ocean basins and event b represents earthquakes. 3.) event a represents volcanic eruption and event b represents the creation of mountain ranges. 4.) event a represents the creation of mountain ranges and event b represents volcanic eruption.