What happens at a divergent boundary?

At a divergent boundary, tectonic plates pull away from one another, which is correctly described in the chosen answer. This movement creates a gap that allows magma from the mantle to rise up and solidify, often resulting in the formation of new crust. This process is commonly observed along mid-ocean ridges, where new oceanic crust is generated as tectonic plates diverge. The pulling apart of the plates can lead to volcanic activity and the development of rift valleys as the land stretches and thins. This geologic activity is a fundamental aspect of plate tectonics, influencing not only the formation of Earth's surface features but also the dynamics of the Earth’s lithosphere.