Fact 1: The movement of tectonic plates causes volcanic eruptions.

Fact 2: Volcanic eruptions can also cause tsunamis.

Given the two facts above, answer the question "What can cause tsunamis?" with the following options: 
- cloud movement
 - The area was once underwater
 - sonic booms
 - energy of moving objects
 - the movement of tectonic plates
 - deadly and devastating
 - mountain formations
 - wind and erosion


 

     the movement of tectonic plates    