What is the most common cause of tsunamis?

Correct option is C

Correct Answer: (c) Undersea earthquakes
Explanation:
· The most common cause of tsunamis is undersea earthquakes, especially those occurring at tectonic plate boundaries.
· When the ocean floor suddenly displaces due to seismic activity, it pushes large volumes of water upward, generating tsunami waves.
Information Booster:
· 90% of tsunamis worldwide are caused by subduction-zone earthquakes.
· Other causes (less common):
· Volcanic eruptions
· Landslides (submarine and coastal)
· Meteorite impacts
· Major tsunami example: 2004 Indian Ocean tsunami triggered by a 9.1 undersea earthquake near Sumatra.
Additional Knowledge:
· Excessive rainfall and flooding (a): Cause river floods.
· Cyclones and high tides (b): Create storm surges.
· Volcanic eruptions only (d): Can cause tsunamis.