Select the correct answer. Which boundary involves two high-density plates that form deep, narrow trenches along the boundary? A. oceanic-continental convergent boundary B. oceanic-oceanic convergent boundary C. divergent boundary D. transform boundary

B

Explanation:

Oceanic plates are usually denser than continental plate because they are soaked with oceanic water. When two oceanic plates collide, one is subducted under the other causing the formation of a trench in between them. Occasionally, an eruption occurs forming volcanic mountains along the trench.