Question

a. oceanic - continental convergent boundary
b. oceanic - oceanic convergent boundary
c. divergent boundary
d. transform boundary

Explanation:

The image shows an oceanic - crust subducting beneath a continental crust, forming a trench and leading to volcanic activity on the continental side. This is characteristic of an oceanic - continental convergent boundary. At oceanic - oceanic convergent boundaries, one oceanic plate subducts beneath another and island - arcs are formed. At divergent boundaries, plates move apart and new crust is formed. At transform boundaries, plates slide past each other horizontally.

Answer:

A. oceanic - continental convergent boundary