Final answer:
The most appropriate response for a nurse when a teenage mother expresses uncertainty about parenthood is to ask her to elaborate on her feelings, which offers support and facilitates further emotional assessment. The correct option is B.
Step-by-step explanation:
When a teenage mother expresses ambivalence about her new role as a parent, the best response by the nurse would be: b. Tell me more about how you feel when you hold the baby. This open-ended question encourages the mother to share her feelings without judgment or immediate action, such as suggesting adoption or imposing guilt.
It also allows for an assessment of the mother's emotional well-being and provides an opportunity for supportive counseling. Discussing these feelings can help address any underlying concerns or issues the new mother may be experiencing.