•which layer of the earth drive the convection that moves the plates?

The mantle layer of the earth drive the convection that moves the plates.

Explanation:

On the planet's surface, the intense heat building up on the core of the Earth causes all the hot melted particles to move around. It moves in a pattern considered a convection cell that structures when warm material ascents, cools, and in the long run, sink down. As the cool particles sink, they eventually warm up and then rise once more.

New parts of a plate rise since they are warm and the plate is thin. As boiling magma ascends to the surface at spreading edges and structures new crust, the new crust drives the remainder of a plate out of its way. This is known as edge push.