Question

Imagine you are digging a hole to the center of the earth. In which order would dig through them?

inner core, outer core, upper mantle, lower mantle, crust
crust, upper mantle, lower mantle, outer core, inner core
crust, outer core, inner core, upper mantle, lower mantle
inner core, outer core, lower mantle, upper mantle, crust

Answer 1

Crust, Upper Mantle, Lower Mantle, Outer Core, Inner Core

Answer 2

The order in which you would dig through the layers is

crust → upper mantle → lower mantle → outer core → inner core

See the image below.