Answer the following question given this paragraph: 

mid-ocean ridges : A long chain of mountains that rises up high above the deep seafloor. An example is the light blue gash in middle of Atlantic Ocean. Light blue is higher elevation than dark blue.


Q: A long chain of mountains that rises up high above the deep seafloor is called?

 Choices:

- oceanic alps

- blue ridge mountains

- sea mounds

- mid-ocean ridges

A:
mid-ocean ridges
