What is the relationship between the focus and epicenter of an earthquake? a the focus is the point on earth's surface and the epicenter is the start of the movement b the epicenter is the point on the earth's surface that lies directly above the focus c both are inside the surface of the earth but the focus is much deeper than the epicenter. d the focus is the point where the seismic waves reach the surface and the epicenter is where the seismic waves exit the earth's surface.