Which one of the following layers of earth has largest volume,?

The lower mantle of Earth alone comprises roughly 55 percent of the total volume of the Earth. The lower mantle is approximately 660km to 2900km deep.

The upper mantle is defined as that part of the mantle between the crust and the phase transition of γ-olivine to perovskite. The total mass of the upper mantle is 1.06 × 1024 kg, ...