The lithosphere is the outermost layer of the Earth`s structure. It is broken into various tectonic plates that make up the Earth`s surface.

Option 1 states that the lithosphere consists of the upper and lower mantle. However, this is incorrect as the mantle is located beneath the lithosphere. The mantle itself is divided into the upper mantle and the lower mantle.

Option 2 states that the lithosphere consists of the crust and the core. This is also incorrect as the core is located beneath the mantle and is not part of the lithosphere.

Option 3 states that the lithosphere consists of the crust and the uppermost solid mantle. This is the correct answer. The lithosphere includes the Earth`s solid crust, which is made up of both continental and oceanic crust, as well as the uppermost solid portion of the mantle.

Option 4 states that the lithosphere consists of the mantle and the core. This is incorrect as the core is not part of the lithosphere.

Therefore, the correct answer is option 3, which states that the lithosphere consists of the crust and the uppermost solid mantle.