plant fossils that are similar in size the weathering and erosion of coastlines new crust formed by the sea floor spreading rocks with different physical appearances
I gave my students this multiple choice question: Which type of evidence would a geologist need to support plate tectonic theory?

Only one answer is correct among these 4 choices:
- plant fossils that are similar in size
- the weathering and erosion of coastlines
- new crust formed by the sea floor spreading
- rocks with different physical appearances

Could you tell me which one is correct?

new crust formed by the sea floor spreading