40 seconds I’m pretty sure sorry if I’m wrong
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. Although the rocks of the lithosphere are still considered elastic, they are not viscous
Im not sure but it might be the last option: it gives reasons to be believed and trusted
