Divergent boundaries occur along spreading centers where plates are moving apart and new crust is created by magma pushing up from the mantle. Picture two giant conveyor belts, facing each other but slowly moving in opposite directions as they transport newly formed oceanic crust away from the ridge crest.
I think D?? I apologize if not-check in other answers to be sure ^^
it's the last one because it's depended on the rock layers
