Final answer:
Women are more likely to have a "neo-traditional" family model as a back-up plan if the original plan for sharing household and parenting responsibilities doesn't work out.
Step-by-step explanation:
Based on the referenced material and societal trends, women are more likely to have a "neo-traditional" family model as a back-up plan, in case their original plan for sharing doesn't work out. The data suggest that men are less likely to live in a household with their own children, and that the role of the mother, while evolving, still carries the expectation of being the primary caregiver. This social expectation, along with the increase in single-parent households led by women, supports the assertion that it is indeed women who are more likely to adopt a neo-traditional family model should the need arise.
The majority of U.S. children live in two-parent households, but there is also a substantial number living in one-parent households, with mothers making up the majority of single parents. With the ongoing societal changes and diversification of family structures, the traditional family model has shifted, giving way to a variety of family forms that include single parents, cohabitating couples, and same-sex couples raising children through surrogates or adoption. Nonetheless, certain traditional roles and expectations, particularly for women, serve as fallback options during times of change or instability.