Aforms where two oceanic plates collide. a. hot spot c. transform boundary b. subduction zone d. rift valley

The name of two oceanic plates colliding is subduction zone so the answer is B. It's more than just colliding however, since it is more like a crash that causes serious tectonic disturbance. For a subduction zone to have a collision it usually takes millions of years since the plates move extremely slowly.

Your answer is
B subduction zone

This is why you get earthquakes.