GEOLOGY

Detailed explanation-1: -The lithosphere is the solid, outer part of Earth. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth’s structure. It is bounded by the atmosphere above and the asthenosphere (another part of the upper mantle) below.

Detailed explanation-2: -The lithosphere is the outermost layer of Earth, composed of the crust and the brittle part of the upper mantle. The term lithosphere is derived from the Greek words “lithos, ” meaning stone, and “sphaira, ” meaning globe or ball.

Detailed explanation-3: -The correct option is A crust. The uppermost layer of the earth is called the crust. It is about 35 km on the continental masses and 5 km on the ocean floors.

Detailed explanation-4: -The 3 main layers are the core, mantle and crust. The mantle is composed of the mesosphere and the asthenosphere and the uppermost part of the mantle. That uppermost part of the mantle is what is combined with the crust to make the lithosphere.