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# Recent investigations of earthquakes have turned up a previously

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Intern
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Re: Recent investigations of earthquakes have turned up a previously [#permalink]
Why is Option E wrong? It is very much similar to Option B!!
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Re: Recent investigations of earthquakes have turned up a previously [#permalink]
trulyness wrote:
Recent investigations of earthquakes have turned up a previously unknown type of seismic shock, known as a displacement pulse, which is believed to be present in all earthquakes. Alarmingly, high-rise buildings are especially vulnerable to displacement pulses, according to computer models. Yet examination of high-rises within cities damaged by recent powerful earthquakes indicates little significant damage to these structures.

Which one of the following, if true, contributes to a resolution of the apparent paradox?
(A) Displacement pulses travel longer distances than other types of seismic shock.
(B) Scientific predictions based on computer models often fail when tested in the field.
(C) While displacement pulses have only recently been discovered, they have accompanied all earthquakes that have ever occurred.
(D) The displacement pulses made by low- and medium-intensity earthquakes are much less powerful than those made by the strongest
earthquakes.
(E) Computer models have been very successful in predicting the effects of other types of seismic shock.

A, C, E are easy to eliminate in that A and C are basically irrelevant and E partially makes the paradox even more puzzling because if computer models are successful, why haven’t they correctly predicted damage of high rise buildings.

D. The displacement pulses made by low- and medium-intensity earthquakes are much less powerful than those made by the strongest
earthquakes.

This would be helpful if powerful earthquakes were mentioned or if all displacement pulses are must less powerful. But we are only talking about powerful earthquakes, so this choice doesn’t help.

Eliminate D.

B. Scientific predictions based on computer models often fail when tested in the field.
If this is true then the computer models must be incorrectly predicting the damage. Helps explain why what the models predicted wasn’t actually seen in real life.

B is the correct answer.
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Re: Recent investigations of earthquakes have turned up a previously [#permalink]
Recent investigations of earthquakes have turned up a previously unknown type of seismic shock, known as a displacement pulse, which is believed to be present in all earthquakes. Alarmingly, high-rise buildings are especially vulnerable to displacement pulses, according to computer models. Yet examination of high-rises within cities damaged by recent powerful earthquakes indicates little significant damage to these structures.

Which one of the following, if true, contributes to a resolution of the apparent paradox?
(A) Displacement pulses travel longer distances than other types of seismic shock. - WRONG. So, then what happens? Nothing is relatable to the passage or the conclusion itself.
(B) Scientific predictions based on computer models often fail when tested in the field. - CORRECT. POE helps. So there our divergence sorted out. Virtual and reality differ.
(C) While displacement pulses have only recently been discovered, they have accompanied all earthquakes that have ever occurred. - WRONG. So what!! Does it makes us understand why there was little damage. No, it does not.
(D) The displacement pulses made by low- and medium-intensity earthquakes are much less powerful than those made by the strongest
earthquakes. - WRONG. Scope shift. Irrelevant.
(E) Computer models have been very successful in predicting the effects of other types of seismic shock. - WRONG. Not helpful. Also, irrelevant as other types of shocks is pointed towards.