Fact 1: Folding an object causes that object to change shape.

Fact 2: Origami figures are paper folding art projects.

Given the two facts above, answer the question "What causes an object to change shape?" with the following options: 
- Origami
 - Sitting
 - Circling
 - heat
 - Listening
 - friction
 - erosion
 - a prism


 

 Origami        