Here's why:

* Active margins are characterized by the collision of tectonic plates, which creates a zone of subduction where one plate slides beneath the other. This process results in significant uplift and deformation of the continental crust.

* The continental rise is a gently sloping, sediment-covered region that extends from the base of the continental slope to the abyssal plain. It forms due to the accumulation of sediments transported from the continent by turbidity currents and other processes.

* Active margins often have a prominent continental rise because the subduction process generates a lot of sediment, which is transported to the rise by currents.

Therefore, active continental margins have a rise that is often larger and more pronounced than those found at passive margins.