ACCorDing to thE pAssAgE, pEoplE's lEArning ACtivitiEs ArE possiBlE BECAusE thEy ______.
A．Enjoy BEing rEwArDED For Doing thE right thing
B．know whAt is vitAl to thE progrEss oF soCiEty
C．BEliEvE thAt Emotions ArE FunDAmEntAl For thEm to stAy AlivE
D．BEnEFit From proviDing hElp AnD support to onE AnothEr