People's motivations are a. the forces that drive them to satisfy their needs b. the things that make them act uncharacteristically c. the quantifiable elements of their characters d. the various psychological characteristics of them e. the collection of things that appeal to them

A. The forces that drive them to satisfy their needs

i also have the same question.

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.