The asthenosphere is a part of which layer of earth

Upper mantle

Explanation:

Asthenosphere is the layer below the crust and in the upper part of the mantle. The rocks here are generally solid but behaves in a plastic manner. Due to this plastic behavior they have the ability to flow during deformation. The lithospheric crust floats over this asthenosphere layer. This region is comparatively very hot as the heat radiated from the interior of the earth generates convection current in the mantle that drives the plates to move in different directions.

the bullets go in this order.

4, 1, 3, 5, 2

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