Which geological feature is typically created by the process of seafloor spreading?

Seafloor spreading is a geological process that occurs at mid-ocean ridges, where tectonic plates are moving apart due to mantle convection. As these plates separate, magma from the mantle rises to fill the gap, creating new oceanic crust. This process leads to the formation of mid-ocean ridges, which are underwater mountain ranges characterized by volcanic activity.

Mid-ocean ridges serve as a prime example of seafloor spreading, as they are dynamic areas where new material is continuously added to the ocean floor. The upward movement of magma not only forms the ridges but also contributes to shallow earthquakes along these boundaries. This ongoing process is essential for understanding plate tectonics and the geological evolution of Earth's ocean basins.

The other geological features mentioned in the question arise from different tectonic processes and do not result from seafloor spreading.