<span>The Continental-volcanic is not a convergent boundary. A convergent boundary is a destructive plate boundary. It is a region where two or more tectonic plates move towards each other and collide. A good example of this is the San Andreas fault off the West Coast of America. When these plates collide, they can either cause an earthquake or a volcano to erupt. The intensity of the earthquake or volcano eruption depends on the speed at which the tectonic plates collide</span>
I believe C is the correct answer; parent material is rich in nutrients for plants, and decomposed plant litter is also known as decaying organic material. Hope this helps! :)