What is the lithosphere and describe its characteristics?

The lithosphere is Earth's outermost layer, composed of rocks in the crust and upper mantle that behave as brittle solids. ... The lithosphere is broken into large pieces called plates, which are made up of either seafloor lithosphere (mostly basalt) or continental lithosphere (less dense rocks, like granite).

answer; i believe the correct answer is (a) nigeria is the largest african crude (oil) supplier; /// so revenue from petroleum;