Near a mid-oceanic ridge you can find... Question 16 options:

alternating bands of old rock and new rock.

bands of rock recording the magnetic field at the time of cooling.

stripes visible on the ocean floor.

alternate stripes of new crust and water.

bands of rock recording the magnetic field at the time of cooling

Explanation:

The ridge is a seafloor system of mountains that is formed by the plate tectonics and is found in places where the sea floor spreading that takes place and in the areas of divergent plate boundary.  The rate of seafloor spreading states the morphology of the ocean floor and due to the magma comes out to the surface from these ridges the rocks that form are aligned to their magnetic properties in the north and south position.

Ichoose a as my answer

It's speed of rotation.