题目内容：
根据材料回答题：Harvardresearchershavecreatedatough,low-cost,biodegradable(可生物降解的)materialinspiredbyinsects'hardoutershells．Thematerial'sinventorssayithasanumberofpossibleusesandsomedaycouldprovideamoreenvironmentallyfriendlyalternativetoplastic．Thematerial,madefromshrimp('虾)shellsandproteinsproducedfromsilk,iscalled"shrilk."Itisthin,clear,flexibleandstrong.Amajorbenefitofthematerialisitsbiodegradability．Plastic'stoughnessandflexibilityrepresentedarevolutioninmaterialsscienceduringthe1950sand'60s．Decadeslater,however,plastic'sverydurability(耐用性)israisingquestionsabouthowappropriateitisforone-timeproductssuchasplasticbags,orshort-livedconsumergoods,usedinthehomeforafewyearsandthencastintoalandfillwheretheywilldegradeforcenturies．Whatisthepointofmakingsomethingthatlasts1,000years?
Shrilknotonlywilldegradeinalandfill,butitsbasiccomponentsareusedasfertilizer(肥料),andsowillenrichthesoil.
Shrilkhasgreatpotential,theinventorssaid．Materialsfromwhichitismadeareplentifulinnature,foundineverythingrangingfromshrimpshells,insectbodiestolivingplants．Thatmakesshrilklowcost,anditsmassproductionpossibleshoulditbeusedforproductsdemandingalotofmaterial.
Workonshrilkiscontinuinginthelab．Theinventorssaidthematerialbecomesflexiblewhenwet,sothey'reexploringwaystouseitinwetenvironments．They'realsodevelopingsimplerproductionprocesses,whichcouldbeusedfornon-medicalproducts,likeforcomputercasesandotherproductsinsidethehome．They'reevenexploringcombiningitwithothermaterials,likecarbonfibers,togiveitnewproperties.ParagraphIofthepassageismainlyaboutshritk's__________. A．remarkabledesign
B．interestingname
C．majorfeatures
D．basicelements
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