Which of the following statements describes the
relationship between the epicenter and focus of
an earthquake?
a. the focus is the point on earth's surface where
the epicenter of an earthquake is located.
b. the epicenter is the point on earth's surface
that lies directly above the focus.
c. the epicenter is the point where an
earthquake occurs, and the focus is where
seismic waves reach earth's surface.
d. the focus is deeper within the earth than the
epicenter is.