Question

what is the primary outcome of oceanic-oceanic convergence?
formation of mountain ranges
creation of deep oceanic trenches
expansion of continental landmasses

Explanation:

When two oceanic plates converge, one is subducted beneath the other. This subduction process leads to the formation of deep oceanic trenches. Mountain ranges (usually from continental - continental or continental - oceanic in some cases with volcanic arcs) and continental landmass expansion (not a direct result of oceanic - oceanic convergence) are not the primary outcomes here.

Answer:

B. creation of deep oceanic trenches