Fact 1: The Himalayas were formed by rock folding.

Fact 2: Folding and metamorphic rock Folding is caused by slow compression and the rock responds by bending.

Given the two facts above, answer the question "What caused the Himalayas to form?" with the following options: 
- permineralization
 - Slow compression
 - Wind storms
 - a hydraulic system
 - objects that have mass
 - Dinosaurs
 - Glaciers
 - Water expanding


 

  Slow compression       