If the presence of a prehistoric shark tooth high in the mountains indicates that the land was once underwater, then aprehistoric shark tooth found discovered high in the mountains likely indicates what?

Answer choices:
- The area was once underwater
 - Currents were once more severe
 - Sharks swim long distances
 - tectonic plates being pushed together
 - the wearing away of rock
 - Sharks are remarkable at adaptation
 - movement of tectonic plates
 - movements in the earth's crust

 

 The area was once underwater         