Answer:
D. taphrogenic
Step-by-step explanation:
The plate divergence is an example of taphrogenic process. The taphrogenic process is a process in which the Earth's crust is getting stretched because of the tectonic activities, opening up gaps in the crust. Some of the formation we have because of this process are the divergent plate boundaries, rifts, and trenches. The plate divergence occurs because of the strong activity of the convection currents in the mantle layer. They manage to push magma through the crust, and as the magma is getting out it pushes the old crust away, while creating new crust in meantime.