Describe how energy at an earthquakes focus, deep inside earth, can cause damage on the surface many kilometers from the epicenter

The energy of the seismic waves that reach the surface is greatest at the epicenter. The most violent shaking during an earthquake may occur kilometers away from the epicenter.

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.