The Nurse Is Counseling a Couple Who Has a Neonate

The nurse is counseling a couple who has a neonate exhibiting the manifestations of trisomy 21. This is the couple’s first child, and they have no identifiable risks. Which explanation does the nurse provide to the parents?

A) Advanced maternal age will cause an alteration in an oocyte before reproduction.
B) An exposure to a highly contagious viral infection is responsible for the defect.
C) Errors or abnormalities in a child can occur at any time during the process of development.
D) Fertilization is likely to have occurred with an immature spermatocyte from the male.