题目内容：
根据以下材料，回答题TheCaliforniaregionboastsawidevarietyofclimatesandgeographicalfeatures,rivalinganyotherareaofcomparabledimensions.Nearlyallbuttheeastern-edgeCaliforniaNativeAmericanslivedwhereenvironmentalconditionswerefavorable,makingfoodrelativelyaccessible.AlongthePacificCoast,theyhuntedfishandseamammalsbyboat.
IncludedweresuchCaliforniatribesastheChumash,YurokandPomo.TheMaiduandPomoprincipallyateacorns,whichhaveahighercalo-rieratingthanwheat.Theypoundedthehardnutswithstonesandwashedoutthebittertastewithwater.
ThePomocraftedwhatwerearguablythefinestbasketsinallofindigenousAmerica.Theymadebasketsassmallasathimbleandasbigasayardinwidth.Theymadewatertightbasketsfor
cookingacornmushandseedgruel,aswellasforcarryingandstoringfood.Theywoveespeciallybeautifulbasketsforpresentsandasofferingstoforebears.Somewerebedeckedwithcolorful
birdfeathersandshells.Theirskillalsowasappliedtotrays,boats,headgearandbabycarriers,suchasawickerworkcradleboardinwhichaninfantspenthisfirstyear.Theirmothersworehatsthat
resem-bledbowl-shapebaskets.
TheCalifornianativeslivedincommunitiesnumberingupto2,000withdwellingsarrayedingroups.Ahouseconsistedofaroundframecoveredwithgrass.Therewasaskylightintheroofand
thebedsweremadeonskin-coveredframeseachwithapartitionforprivacy.Inthecenterofthefloor,theymadeacookfireforseeds,nuts,fishandotherfoods.Morethan100languagesflourishedinCaliforniabefore
Europeancontact;mostaregonetoday.
TheCaliforniaregiontakespridein__________. A．environmentalconditions
B．huntingfishandseamammalsbyboat
C．poundingthehardnutswithstonesandwashedoutthebittertastewithwater
D．avarietyofclimatesandgeographicfeatures
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答案解析：