earthquakes and volcanoes earthquakes and landslides landslides and avalanches volcanoes and avalanches
I gave my students this multiple choice question: Which kind of events can form mountains?

Only one answer is correct among these 4 choices:
- earthquakes and volcanoes
- earthquakes and landslides
- landslides and avalanches
- volcanoes and avalanches

Could you tell me which one is correct?

earthquakes and volcanoes