07年英语考研中的TEXT1中24题为什么C不对

Ericssonandhiscolleaguesbelievethat

[A]talentisadominatingfactorforprofessionalsuccess.

[B]biographicaldataprovidethekeytoexcellentperformance.

[C]theroleoftalenttendstobeoverlooked.

[D]highachieversowetheirsuccessmostlytonurture.

为什么C不对?请帮忙分析一下

附上全文：Ifyouweretoexaminethebirthcertificatesofeverysoccerplayerin2006’sWorldCuptournament,youwouldmostlikelyfindanoteworthyquirk:elitesoccerplayersaremorelikelytohavebeenbornintheearliermonthsoftheyearthaninthelatemonths.IfyouthenexaminedtheEuropeannationalyouthteamsthatfeedtheWorldCupandprofessionalranks,youwouldfindthisstrangephenomenontobeevermorepronounced.

Whatmightaccountforthisstrangephenomenon?Hereareafewguesses:a)certainastrologicalsignsconfersuperiorsoccerskills;b)winterbornbabiestendtohavehigheroxygencapacity,whichincreasessoccerstamina;c)soccer-madparentsaremorelikelytoconceivechildreninspringtime,attheannualpeakofsoccermania;d)noneoftheabove.

AndersEricsson,a58-year-oldpsychologyprofessoratFloridaStateUniversity,sayshebelievesstronglyin“noneoftheabove.”EricssongrewupinSweden,andstudiednuclearengineeringuntilherealizedhewouldhavemoreopportunitytoconducthisownresearchifheswitchedtopsychology.Hisfirstexperiment,nearly30yearsago,involvedmemory:trainingapersontohearandthenrepeatarandomseriesofnumbers.“Withthefirstsubject,afterabout20hoursoftraining,hisdigitspanhadrisenfrom7to20,”Ericssonrecalls.“Hekeptimproving,andafterabout200hoursoftraininghehadrisentoover80numbers.”

Thissuccess,coupledwithlaterresearchshowingthatmemoryitselfisnotgeneticallydetermined,ledEricssontoconcludethattheactofmemorizingismoreofacognitiveexercisethananintuitiveone.Inotherwords,whateverinborndifferencestwopeoplemayexhibitintheirabilitiestomemorize,thosedifferencesareswampedbyhowwelleachperson“encodes”theinformation.Andthebestwaytolearnhowtoencodeinformationmeaningfully,Ericssondetermined,wasaprocessknownasdeliberatepractice.D