Answer:
Sections of Earth's continents are in slow, constant movement.
Explanation:
Earth's crust is broken up and divided into numerous pieces. These pieces are called tectonic plates and they come in various shapes and sizes. The tectonic plates can consist predominantly of continental crust or predominantly of oceanic crust, and there isn't a single plate that is exclusively made out just from one type of crust.
The reason why Earth's crust is broken apart is the force that comes from the convection currents from the mantle below it. Not just that the convection currents break up the crust, but they also push it in a certain direction. By doing so, the convection currents manage to move the tectonic plates on Earth's surface, and even though this is a slow movement, it has huge effects.
I believe C is the answer, may be wrong though.
I would say that D is the most important reason ie to monitor the location and magnitude of seismic activity to attempt to find patterns which may lead to the ability to predict the next earthquake in the world though individual seismic stations probably monitor more the seismic activity in their own country mostly though perhaps not exclusively.
Ummmm????? what does this question mean????
