Answer:
They represent America's varied population
The answer is most likely A, Different societies have different ideas about marriage.
Hope this helps! :D
~PutarPotato
Dill's parents lavish him with more gifts and monetary favors than Atticus, but Jem and Scout seem to sense that this is in return for their own lack of time and interest. Atticus gives his children a large degree of independence for kids so young; Dill also is given more freedom than most kids.
Paricia Coles (SAID), “They act like puppies.”