Respuesta :
Answer:
it is d the answer is right our welcome
Explanation:
The mechanism by which older oceanic rock move at a ridge is : ( D ) New molten material rises and moves the rock
Oceanic rocks ( crust ) are made up of basalt and gabbro. Oceanic crust is thinner when compared to continental crust because of the continental crust are composed of andesite and granite which are light colored as well.
Older Oceanic rocks are moved at the ridges only when new molten materials are formed and these material rises from the crust causing the older Oceanic rocks to move.
Hence we can conclude that the mechanism by which older oceanic rock move at a ridge is New molten material rises and moves the rock.
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