Question

features of oceanic - oceanic convergence is the formation of deep oceanic trenches. exemplified by the mariana trench, one of the deepest points on earths surface, these subduction zones generate intense geological activity, including the melting of crust, and contribute to the dynamic processes that shape our planets seafloors. what occurs when two dense oceanic crusts converge at a subduction zone? one plate sinks beneath the other into the mantle volcanic eruptions the emergence of new continents

Explanation:

At an ocean - ocean subduction zone, the denser oceanic plate sinks below the other into the mantle. This process can lead to volcanic eruptions over time but the immediate event is the subduction of one plate. New continents do not emerge in this scenario.

Answer:

A. one plate sinks beneath the other into the mantle