The largest layer of earth is the
a. inner core.
b. crust.
c. outer core.
d. mantle

The mantle is the largest layer of the earth it takes up 84% of the earth. there  are two sections in the mantle, the top is called the lithosphere and it also includes the crust. the lithosphere is a solid substance made out of dense rock that is about 1300 degrees. the bottom is called asthenosphere.

Answerbecause of improved transportation, communication, and other advantages;