Respuesta :

Answer:

1. Viscous Drag

2. Slab-Pull Force

3. Ridge-Push Force

Explanation:

The three factors that drive plate motion in the asthenosphere are as follows:

1. Viscous Drag

2. Slab-Pull Force

3. Ridge-Push Force

Asthenosphere is the upper layer of the earth's mantle. This layer lies below the lithosphere  at depths between approximately 80 and 200 km below the surface.

LAB refers to the lithosphere–asthenosphere boundary.