erosion of coastlines weathering of mountains movement of crustal plates formation of sedimentary rocks
I gave my students this multiple choice question: Seafloor spreading provides evidence of which of the following Earth processes?

Only one answer is correct among these 4 choices:
- erosion of coastlines
- weathering of mountains
- movement of crustal plates
- formation of sedimentary rocks

Could you tell me which one is correct?

movement of crustal plates