Answer:
The Correct Answer is option B.
Step-by-step explanation:
Seafloor spreading refers to the motion which is divergent to the oceanic plates that evolve due to the movement of tectonic plates.
The spreading of the seafloor is the ocean which is splitting that results in the movement of tectonic plates. These plates are moving constantly over the last millions of years that can lead to the joining of all the landmasses forming a super-continent.