The tectonic cycle describes the movement of earth's crust. recycled "new" oceanic crust is formed by at divergent boundaries.
a. weathering
b. seafloor spreading
c. subduction
d. convergence

Convergence
it's known as "convergent plates" this is when the Continental Plate meets an Oceanic plate, and when the Denser plate sinks the Lesser plate, in this case, the Continental is denser so it sinks the oceanic crust

The answer would be dogs.