Which of the following best describes a divergent boundary?

A divergent boundary is characterized by tectonic plates moving apart from each other. This movement creates a gap where magma rises from the mantle to fill the void, often leading to the formation of new crust, typically seen at mid-ocean ridges. As the plates separate, they can lead to various geological activities, including volcanic eruptions and the creation of rift valleys. This process is fundamental in the theory of plate tectonics, as it is responsible for the continual reshaping of the Earth's surface and the creation of ocean basins. Understanding this process is crucial in geography, as it explains not only the formation of certain landforms but also the geological phenomena associated with areas near divergent boundaries.