As a result of the landslide at the Vaiont Dam, northern Italy, in 1963, approximately 3000 people died ________.
A. when slope failure allowed the dam structure to be pushed downstream by the water pressure of the reservoir
B. when the landslide impacted and destroyed the dam structure
C. as their houses that had been built on the landslide were destroyed
D. as a huge wave of water was displaced from the reservoir by the landslide
E. as their houses were buried by the landslide
Answer: D
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