Help 10 points!! About 80% of the Earth's volume is made up of?

Question

Which one

crust

outer core

inner core

mantle

Answer 1

I know for a fact that it isn't the crust or the inner core in terms of volume.  I would guess that it's the mantle.  It's takes up the most space on all of the globes I've seen.

Answer 2

I believe it's the mantle