III：Logical Reasoning

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1、October2011–PrepTest64–ExplanationsSectionIII:extinct.That’slikesayingmosthousesonmystreethavebasements,somosthouseswithbasementsareonmystreet.LogicalReasoning(E)iscounterproductive.Iforganizationsarelimitedtohowmanybattlestheycanwage,thenexpandingthedefinitionof“hotspot”wouldjustcreatemore

2、optionsfromwhichtochoose.Moreover,expandingthedefinitionwouldmean1.(B)Inferenceincludingmorelow-valueareasas“hotspots.”Step1:IdentifytheQuestionTypeThequestionasksforsomethingthatlogicallyfillsintheblank2.(E)Flawattheendofthestimulus.SincethelastsentencebeginswithStep1:IdentifytheQuestionTy

3、petheword“[t]hus,”theblankwillrepresentalogicalconclusion,“[V]ulnerabletocriticism”isclassicLSATlanguageindicatingsupportedbytherestofthestimulus.Inotherwords,thetestthattheargumenthasaFlaw.Here,theauthortriestoapplyaisaskingyouanInferencequestion,andtherightanswerwillprincipletoreachthecon

4、clusion.WhileyourskillsinPrinciplefollowunequivocallyfromtheinformationgiven.Lookforwaysquestionswillbehelpful,stayfocusedontheultimatetask:tocombinethestatementsandfindananswerthatfollowsfindinganddescribingtheflaw.Thatmeansidentifyingwhyfromthosefacts.theargument’sevidence(whichincludesth

5、eprinciple)doesStep2:UntangletheStimulusnotlogicallysupportitsconclusion.Theauthorprovidesinformationabout“hotspots,”placesStep2:UntangletheStimulusteemingwithdifferentspeciescalled“endemic”species.TheprincipleprovidessomeFormalLogic:IfyousellCommercialdevelopmentthreatensthoseareas,andende

6、micsomethingyouknowisdefectivebutclaimthatitworksjustspecies(suchastheonesinthoseareas)arethetypesoffine,you’recommittingfraud.Theauthorthenprovidesaspeciesmostlikelytobecomeextinct.Theauthorthenstartssupposedexample,inwhichWiltonsellsabiketoHarristomakearecommendationtoenvironmentalorganiz

7、ationswithoutmuchknowledgeaboutitscondition.Wiltonsaidthewithlimitedresources,groupsthatwanttopreservespeciesbikewasfine,butHarrislaterdiscovereddefectivebrakes.butcan’tfighteverypossiblebattle.Andthat’swheretheBasedontheprinciple,theauthorconcludesthatW