Oldest to youngest- D, A, E, B, C
It's called relative dating, you basically find the rocks that are at the very bottom (oldest), look for the ones that are on the top (younger), but if you find any that are cross cutting, those are the youngest of them all.
B) a fracture caused by shear stress
Yes , yes it is very much so
The position on earth's surface directly above the earthquake source is called the epicenter.