The answer to this would be A, because they began to spread westward once they decided to head away from the Arctic.
All of the above are correct
They began to form by a combination of volcanic activity and the deposit of marine sediments. It formed along northwest Africa about 530 million years ago. ... As the Appalachian Mountains eroded, sand and clay were deposited over Florida's limestone layer.
Volcano/hot spot they are made of many plumesbof lava coming out of the mantal and hardening. After a long time, the crust moves from continental drift but the hot spot stays in the same spot there for creating a new island