FormEr soCiAl CErEmoniEs thAt usED to mArk ADolEsCEnCE hAvE givEn plACE to
A．grADuAtions From sChools AnD CollEgEs
B．soCiAl rECognition
C．soCio-EConomiC stAtus
D．CErtAin BEhAviorAl ChAngEs