The word "undue" in the second paragraph means ______.

A．in the late 19th century in the United States the dividing line between adolescence and adulthood no longer existed
B．no one can marry without the permission of his parents until the age of twenty-one
C．one is considered to have reached adulthood when he has a driver's license
D．one is not free form the restrictions of child labor laws until he can join the army

A．one will obtain more basic rights
B．the older one becomes, the more basic rights he will have
C．one won't get more basic rights than when he is 21
D．one will enjoy more rights granted by society