Answer:B. Diverge. I hope this helps you out
Step-by-step explanation:
Mid-ocean ridges form where two ocean plates diverge. At these locations, new ocean crust is constantly being formed as magma rises up from the mantle and solidifies. As new crust is added to the ridges, the older crust at the edges of the plates moves away from the ridge and ultimately sinks back into the mantle at subduction zones where one plate is forced beneath another. This process is known as seafloor spreading and is a key mechanism for plate tectonics.