Children Who Have Experienced Long Periods of Isolation,such as the Example

Children who have experienced long periods of isolation,such as the example of Anna,illustrate how:

A) biology (nature) is more important than the social environment (nurture) .
B) the social environment is more important than biology.
C) "human nature" is the result of a complex relationship between nature and nurture.
D) lack of discipline in early childhood leads to long-term physical and mental problems.