The mantle is described as:
C. Hot, partially melted rock that flows
The mantle is a layer of the Earth between the outer core and the Earth's crust. It consists of hot, solid rock that can flow over long periods of time due to its high temperature and pressure. This flow of rock in the mantle is what causes tectonic plates to move, leading to processes like earthquakes and volcanic eruptions. Therefore, the mantle is not a dense layer of solid metal, a layer of liquid metal that spins, or the solid, rocky layer on the outside, but rather hot, partially melted rock that flows.
