Question

the portion of earth layer that is broken into plates is... asthenosphere core mantle lithosphere

Explanation:

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and the uppermost part of the mantle. It is broken into tectonic plates that move over the more ductile asthenosphere. The core is the innermost layer, and the mantle (excluding the lithospheric part) is below the asthenosphere.

Answer:

Lithosphere