Answer: The Earth's lithosphere is a physical layer made of the UPPER PORTION OF THE MANTLE AND CRUST and the uppermost part of the ASTHENOSPHERE. Hope this helps :)
Step-by-step explanation:
The lithosphere is the solid, outer part of the 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.