Q: A small quake preceding a large quake is called what?


Read this paragraph and choose the correct option from the provided answers:

There are sometimes signs that a large earthquake is coming. There may be small quakes, called foreshocks . These can occur a few seconds to a few weeks before a major quake. Unfortunately, foreshocks are not very useful for predicting large earthquakes. Many quakes do not have foreshocks. Also, small earthquakes are not necessarily followed by a large earthquake.

 Choices:

- aftershock

- warning shock

- preshock

- foreshock


A:
foreshock