- The collision of tectonic plates are found at the convergent boundaries
- The collision of the boundaries causes rocks to fold
- Therefore, the collision of the tectonic plates causes rocks to fold at the convergent boundaries

- The collision of the tectonic plates causes rocks to fold at the convergent boundaries
- A mountain range is formed by rocks folding upon one another
- Therefore, mountains will form at the convergent boundaries by the collision of the tectonic plates

- Mountains will form at the convergent boundaries by the collision of the tectonic plates
- The appalachian mountains are a kind of mountain
- Hence, the appalanchian mountains are formed at the convergent boundaries by the collision of the tectonice plates

So, the appalanchian mountains are formed at the convergent boundaries by the collision of the tectonice plates
Question
Which best explains how the Appalachian Mountains formed?

Context
- The appalachian mountains are a kind of mountain 
- A mountain range is formed by rocks folding upon one another 
- The collision of tectonic plates are found at the convergent boundaries 
- The collision of the boundaries causes rocks to fold