The idea that rocks on either side of a fault spring back to a position of little or no strain at the moment of an earthquake, causing vibrations in the earth's crust, is thetheory.

The correct answer is elastic rebound

It is useful for historians to write narratives so that history can be passed on from their point of view.  think about a story being told in third person, then think about it again being told in first person, by someone who actually experienced the event.

A. it is created from magma. the agents of a metamorphic rock is heat and pressure. (heat from intrusion of magma or burial)