Answer the following question given this paragraph: 

Creep is the very slow movement of rock and soil down a hillside. Creep occurs so slowly you can’t see it happening. You can only see the effects of creep after years of movement ( Figure below ). The slowly moving ground causes trees, fence posts, and other structures on the surface to tilt downhill.


Q: What is the apt term for the very slow movement of rock and soil down a hillside?

 Choices:

- glide

- landslide

- drop

- creep

A:
creep
