Question

which type of boundary is occurring at a? a transform boundary a continental/oceanic convergent a oceanic/oceanic convergent a continental/continental convergent

Explanation:

At point A in the diagram, an oceanic - oceanic convergent boundary is occurring. In an oceanic - oceanic convergent setting, one oceanic plate subducts beneath another due to differences in density. This is consistent with the characteristics of the boundary shown in the image.

Answer:

a oceanic/oceanic convergent