Question

Which of the following can cause a Tsunami?
(a) Volcano(b) Avalanche(c) Tornado(d) Earthquake

Answer 1

Tsunami causes by the  earthquake

Answer 2

Most of the Tsunami incidents are caused by huge earthquakes under the sea when the slabs of huge rock move past each other unexpectedly, causing the severe overlying water content to move.

These resulting waves quickly move away exactly from the source of earthquake incident.

They commonly happen in certain regions of earth actually characterized by the tectonic subduction along the tectonic plate regions.