Final answer:
The student in question is likely in Stage II: Negativity/independence of Cohen's model, as they express resistance towards an aspect of their nursing education.
Step-by-step explanation:
The nursing student who questions the necessity of clinical experience in obstetrics, indicating they will never work with women and children, appears to be in Stage II: Negativity/independence of Cohen's model of professional socialization. This stage is characterized by students beginning to question their reliance on external authority and express more critical and independent thinking, sometimes in the form of resistance or negativity towards aspects of their education.
The student's belief that they will never work with women and children reflects a negative attitude towards obstetrics clinicals, which is characteristic of Stage II.