Question ID:PT47 S1 Q6 Passage: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. Stem:Which one of the following, if true, contributes to a resolution of the apparent paradox? Correct Answer Choice:BChoice A:Displacement pulses travel longer distances than other types of seismic shock. Choice B:Scientific predictions based on computer models often fail when tested in the field. Choice C:While displacement pulses have only recently been discovered, they have accompanied all earthquakes that have ever occurred. Choice D:The displacement pulses made by low- and medium-intensity earthquakes are much less powerful than those made by the strongest earthquakes. Choice E:Computer models have been very successful in predicting the effects of other types of seismic shock.