Question

1. where is the epicenter of an earthquake with respect to its focus?

the epicenter is at the same point as the focus.
the epicenter is on the surface of earth, ten miles from the focus.
the epicenter is on the surface of earth, directly above the focus.
the epicenter is down under the surface of earth, directly below the focus.

Explanation:

The focus is the underground point where an earthquake originates. The epicenter is the corresponding point on Earth's surface that lies vertically directly above this underground focus.

Answer:

The epicenter is on the surface of Earth, directly above the focus.