Answer :
D. convergent A subduction zone is formed at a convergent plate boundary when one or both of the tectonic plates is composed of oceanic crust. The denser plate, made of oceanic crust, is subducted underneath the less dense plate, which can be either continental or oceanic crust.
D. Convergent
Two lithospheric plates converge causing one to subduct under the other creating a subduction zone.
Two lithospheric plates converge causing one to subduct under the other creating a subduction zone.
