题目内容：
根据下面内容，回答题 Parentshavetodomuchlessfortheirchildrentodaythantheyusedtodoandhomehasbecomemuchlessofaworkshop.Clothescanbeboughtreadymade,washingcangotothelaundry,foodcanbeboughtcookedcannedorpreserved,breadisbakedanddeliveredbythebaker,milkarrivesonthedoorstep,mealscanbehadattherestaurant,thework'scanteen,andtheschooldiningroom.
Itisunusualnowforfathertopursuehistradeorotheremploymentathome,andhischildrenrarely,ifever,seehimathisplaceofwork.Boysaretherefore,seldomtrainedtofollowtheirfather'soccupation,andinmanytownstheyhaveafairlywidechoiceofemploymentandsodogirls.Theyoungwageearneroftenearnsgoodmoney,andsoonacquiresafeelingofeconomicindependence.Intextileareasithaslongbeencustomaryformotherstogoouttowork,butthispracticehasbecomesowidespreadthattheworkingmotherisnowanotunusualfactorinachild'shomelife,thenumberofmarriedwomeninemploymenthavingmorethandoubledinthelasttwenty-fiveyears.Withmotherearningandhisolderchildrendrawingsubstantialwages,fatherisseldomthedominantfigurethathestillwasatthebeginningofthecentury.Whenmotherworks,economicadvantagesincrease,butchildrenlosesomethingofgreatvalueifmother'semploymentpreventsherfrombeinghometogreetthemwhentheyreturnfromschool.
Thewritercompareshometoaworkshopbecause__________. A．fathersoftenpursueemploymentathome
B．parentshavetomakefoodandnecessitythemselvesfortheirdailylife
C．manyfamiliesproducegoodsathomeforsale
D．bothfathersandmothersinmostfamiliesareworkers
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答案解析：