How does seafloor spreading relate to supercontinents

The answer is A

Explanation:

Seafloor spreading causes continental plates such as the North American Plate and the Eurasian plate to move apart in the mid-Atlantic ridge. However, the movement of the plate can cause the plates to move towards others. Eventually, when the continental plates move together they form supercontinents. The convection currents in the mantle are the driving force under the tectonic plates.

answer is  

loa ≅ lma

to prove that the triangles are congruent using the aas congruence

the answer is "c" im pretty sure.