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_____________. However, the most common cause is an undersea earthquake. An earthquake which is too small to create a tsunami by itself may trigger an undersea landslide quite capable of generating a tsunami.

  • A.Tsunamis have been historically referred to as tidal waves because as they approach land, they take on the characteristics of a violent onrushing tide
  • B.The term tsunami comes from the Japanese language meaning "harbour' and "wave"
  • C.A tsunami can travel hundreds of miles over the open sea and cause extensive damage when it encounters land
  • D.A tsunami can be generated by any disturbance that rapidly moves a large mass of water such as volcanic eruption

Answer: D

Correct answer: A tsunami can be generated by any disturbance that rapidly moves a large mass of water such as volcanic eruption

However, the most common cause is an undersea earthquake narrows a wider claim, so the blank must make that wider claim about causes. The options about the word's Japanese origin, about tidal waves and about damage on land say nothing about causes, so however would have nothing to qualify.

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