题目内容：
Thepracticeofstudentsendlesslycopyinglettersandsentencesfromablackboardisathingofthepast.Withthecomingofnewtechnologieslikecomputersandsmartphone,writingbyhandhasbecomesomethingofnostalgic(怀旧的)skill.However,whiletoday’seducatorsareusingmoreandmoretechnologyintheirteaching,manybelievebasichandwritingskillsarestillnecessaryforstudentstobesuccessful---bothinschoolandinlife.VirginiaBerninger,professorofeducationalpsychologyattheUniversityofWashington,saysit’simportanttocontinueteachinghandwritingandhelpchildrenacquiretheskillofwritingbyhand.
Berningerandhercolleaguesconductedastudythatlookedattheabilityofstudentstocompletevariouswritingtasks---bothonacomputerandbyhand.Thestudy,publishedin2009,foundthatwhenwritingwithapenandpaper,participantswrotelongeressaysandmorecompletesentencesandhadafasterwordproductionrate.
Inamorerecentstudy,Berningerlookedatwhatrolespellingplaysinastudent’swritingskillsandfoundthathowwellchildrenspellistiedtoknowwelltheycanwrite.“Spellingmakessomeofthethinkingpartsofthebrainactivewhichhelpsusaccessourvocabulary,wordmeaningandconcepts.Itisallowingourwrittenlanguagetoconnectwithideas.”Berningersaid.
Spellinghelpsstudentstranslateideasintowordsintheirmindfirstandthentotranscribe(转换)“thosewordsinthemindwrittensymbolsonpaperorkeyboardandscreen,”thestudysaid.Seeingthewordsinthe“mind’seye”helpschildrennotonlytoturntheirideasintowords,saysBerninger,butalsotospot(发现)spellingmistakeswhentheywritethewordsdownandtocorrectthenovertime.
“Inourcomputerage,somepeoplebelievethatwedon’thavetoteachspellingbecausewehavespellchecks,”shesaid.“Butuntilachildhasafunctionalspellingabilityofaboutafifthgradelevel,theywon’thavetheknowledgetochoosethecorrectspellingamongtheoptionsgivenbythecomputer.”
阅读以上短文，回答题
Whatmakeswritingbyhandathingofthepast?
A.Theabsenceofblackboardinclassroom.
B.Theuseofnewtechnologiesinteaching.
C.Thelackofpracticeinhandwriting.
D.Thepopularuseofsmartphones.
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答案解析：