Fact 1: If fossils of a water animal or plant are found in a place then that place used to be covered by water in the past.

Fact 2: Generally, mountains are good places to find fossils.

Given the two facts above, answer the question "A prehistoric shark tooth found discovered high in the mountains likely indicates what?" with the following options: 
- 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        