Which pair of plate tectonic boundaries is best characterized by mostly shallow focus earthquakes?

Divergent plate boundaries are best characterized by mostly shallow focus earthquakes. At these boundaries, tectonic plates move apart, allowing magma to rise and create new crust, typically resulting in earthquakes that occur at shallow depths. This seismic activity is often associated with mid-ocean ridges and rift zones. In contrast, convergent boundaries can produce both shallow and deep earthquakes, while transform boundaries generally exhibit a mix of shallow focus quakes.