Final Answer:
Certain movements of oceanic plates cause the formation of new crust on the ocean floor is two oceanic plates pulling away from each other. The correct option is C. two oceanic plates pulling away from each other.
Step-by-step explanation:
Plate Movement for New Crust Formation: The process of forming new crust on the ocean floor is associated with divergent plate boundaries, where tectonic plates move away from each other.
When two oceanic plates pull away from each other, it creates a gap or rift. Magma from the mantle rises to fill this gap, solidifying as it reaches the surface. This continuous process leads to the formation of new oceanic crust. The correct option is C two oceanic plates pulling away from each other
Options A, B, and D involve convergent or transform plate boundaries, where plates either slide past each other, collide, or one slips beneath another. While these movements are important in plate tectonics, they do not result in the creation of new crust.