Which of these events most likely happened during the formation of earth's lithosphere?
the heaviest elements settled in the crust.
the heaviest elements settled in the earth's center.
the lightest elements settled in the earth's center
the lightest elements settled in the lithosphere

the heaviest elements settled in the earth's centre

Explanation:

The Earth is composed of four different layers. Many geologists believe that as the Earth cooled the heavier, denser materials sank to the center and the lighter materials rose to the top. Because of this, the crust is made of the lightest materials (rock- basalts and granites) and the core consists of heavy metals (nickel and iron).

The lightest elements formed in the lithospehre

Explanation:

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.