You are presented with the question "The Himalayas were formed by what?" and the following answer choices: 
- earthquakes
 - snowfall
 - chemical changes
 - movement
 - fires
 - graptolites
 - rain
 - calcite

Now knowing that the Himalayas were formed by rock folding and an earthquake may cause folding of the layers, choose the best answer.


 

 earthquakes        