Of the Following Statements, Which Is the MOST Likely Conclusion

Of the following statements, which is the MOST likely conclusion from Werner's Kauai study?

A) Children with prenatal or birth complications nearly always have later difficulties regardless of experience.
B) Adverse family circumstances prevent normal development.
C) Even when one knows both the birth circumstances and the family circumstances of children, one cannot fully predict how they will develop.
D) Experience clearly outweighs prenatal and birth circumstances in determining development.