Answer;
B. Seafloor spreading
Explanation;
-Seafloor spreading is the process by which the Earth's lithospheric plates pull apart from each other, creating gaps that are filled with magma from the asthenosphere.
-Alfred Wegener was the scientist who proposed the idea of continental drift. Wegener gave four proofs to support his continental drift hypothesis. These includes;
- Similarities in coastlines
- Fossil records are similar on separate landmasses
- Geologic evidence similarities
- Climatic Change Similarities
The process of sea floor spreading was a confirmation that Wegener's hypothesis was correct.