Final answer:
Lucy and Mark's arrangement where he works outside and she takes care of the home and their son is an example of a traditional marriage, focusing on distinct gender roles for each partner.
Step-by-step explanation:
Lucy and Mark have a traditional marriage. In this arrangement, Mark works outside the house and provides for the family's economic well-being, while Lucy is a homemaker and a full-time caregiver for their son. A traditional marriage reflects a division of labor and roles based on gender, where the husband typically works outside and the wife manages the home and children.
This is contrasted with other forms of marriage, such as egalitarian, where responsibilities both inside and outside the home are shared more equally between partners; complementary, where the different roles are regarded as equally important though not the same; and transitional, which could represent a family structure that is in the process of shifting from traditional to more modern roles.
Despite changes in society with more women getting higher education and dual-earner marriages becoming more common, the traditional model still exists and may be beneficial for some families, depending on their values, circumstances, and mutual respect within the partnership.