You are presented with the question "How are mountains made?" and the following answer choices: 
- less water
 - magma
 - barrel-shaped
 - lava
 - earthquakes
 - calcite
 - Water expanding
 - rock folding

Now knowing that the Himalayas were formed by rock folding and mountains are formed from folds that bend upward, choose the best answer.


 

        rock folding 