Here's a problem to solve: Scientists have measured the rate of growth of the Atlantic Ocean basin to be about 2 to 3 cm per year. This type of activity coincides with the formation of ridges on the ocean floor. What is the most likely cause of this activity?

Among the 4 following options, which is the correct answer?

- A: erosion from tidal action
 
- B: the deposition of sediment
 
- C: the flow of continental basalt
 
- D: movement from tectonic plates
 