题目内容：
Questionsarebasedonthefollowingpassage.
By1970,accordingtoaWorldWildlifeFundreport,onlyabout4400tigerssurvivedthroughouttheworld-halfoftheminIndia．Mr．Foresters,whofollowedandcountedtigerfootprints,estimatedthatinMay1872onlyabout1800tigersexistedinIndia．ProjectTigersupportedbyW．W．F．wasimmediatelylaunched．Ninetigerreserveswerecreated,witharmedguardsprotectingthem.
TheprojectprovidedopportunitiesforresearchersfromIndiaandabroadtostudytigersinthereservesandgatherpreviouslyunavailableinformationabouttheirhabits．Studiesshowthatamaletigermaycontrolahuntingtcrritory(领地、活动范围)ofbetween10and20sq．kms,dependingonitsage,sizeandstrength．Theterritoryofamaleincludesthesmallerterritoriesofthreeorfourtigresses．Atigermarkstheboundariesofitsterritorialfights,beingguidedbythedistinctivcbodysmellofothertigers．Tigersfighttodeathdnlywhenatigressisdefendingheryoung,orwhenatigerisguardingatigressfromtheattentionofothermales.
Thepopularimageofthetigeristhatofamercilessandunconquerablehunter．Butstudiesshowthatitcatchesonlyoneof20victims(牺牲品)ittriestoattack.
FearshaverecentlydcvclopcdthatProjectTigerhasbccntoosuccessful．Ithasenabledthetigerpopulationtodouble(bymid-80s)butIndia'shumanpopulationhasalsogrownoutofcontrol．Currentlyitis750millionandlikelytobe900millionbythecndoftheccntury.
Landproblemisbecomingscriousandmanyruralpeoplefcclbetteraboutthefactthatsomerichforestsarcrcscrvcdfortigers．Agrowingnumberofattacksbytigeronmanaddedtothehostility(敌意).
TheultimateaimofProjectTigeristo__________. A．studythegrowthrateoftigers
B．protecttigersfrombeingkillcd
C．promotethebrccdingofyoungtigers
D．analyzc(分析)thebehavioralpatternsoftigcrs
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