What does the model demonstrate?

Question

A.
In the asthenosphere, as heat circulates, plates are pushed upward causing seismic activity.
B.
Tectonic plates are pushed apart partly due to convection currents moving through the asthenosphere.
C.
In the asthenosphere, circulating heat expands the thickness of the crust of each plate.
D.
Tectonic plates are pushed apart due to steam caused by heat circulation in the asthenosphere.

Answer 1

The most accurate statement based on the understanding of plate tectonics and the role of the asthenosphere is:

B. Tectonic plates are pushed apart partly due to convection currents moving through the asthenosphere.

Convection currents in the asthenosphere are responsible for the movement of tectonic plates, causing them to diverge, converge, or slide past each other, leading to various geological phenomena.