Tsunamis are

waves that are produced by tidal forces

waves that cannot cause damage on land

often generated by movements of the ocean floor

also known as tidal waves

Tsunamis are often generated by movements of the ocean floor.

Option C

Explanation:

Tsunamis are huge gain ocean waves which are able to generate massive destruction, this huge damage can cause environmental distress. These waves are produced by earthquakes or underwater landslide. Mostly the tsunamis generated due to earthquake, induced movement by the ocean floor. These tsunami waves are generated more by the ocean floor which have greater length. They travel as fast as jet planes and within seconds can cover the whole area.

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