No one can expect to fully enjoy the adulthood privileges until he is ________.
[A] eleven years old
[B] sixteen years old
[C] twenty-one years old
[D] between twelve and twenty-one years old
正确答案：C
43[C]意为：21岁第二段后面部分从Itisduringthenineyears到倒数第二句列举了青春期各阶段的权利其中第十句（attheageoftwenty-one…publicoffice）指出21岁是开始享有完全成人权利的年龄所以[C]为正确选项
11岁不属于该部分介绍的范围；16岁时只能享有部分成人权利；12到21岁期间是一个从儿童向成人转变的过程个人享有权利逐渐增加但若享有完全成人权利需要达到21岁因此其他项排除
