Which of the following evidence changed the theory of plate tectonics? age of rocks and mountains fossils magnetism size and shape of continents

Hello! 

I believe the answer is ultimately Fossils, seeing how fossils from one edge of a continent could be found on the edge of another continent in which is theorized they were once bonded. 

I hope this helps and I'd like a Brainliest if anyone else has answered. It's alright if not. Have a nice day. :)

You get 6 for mechanical