Answer:
that quote is definitely true.
I just took this test and was looking for the answer. I couldn't find it, so i guessed. I actually got it right! It's b)<span> combine private investments with government programs. Hope i could help:)</span>
Rock layers in order is basically natures calendar.
The highest layer is the newest formed layer
While the deepest layer was the oldest and probably has been there from some time
And everything in between goes accordingly
So putting rocks in order by age helps scientists better understand what was there before what and how the rocks changed over time.
Hope this helps!
Brailiest is always appreciated if you feel its deserved! :)