How is a nuclear family defined?

A nuclear family is defined as a family unit that consists of two parents and their children living together. This structure is often called the "traditional family" and is characterized by the direct relationship between parents and their offspring. The emphasis is on the immediate family members—parents and their dependent children—forming a household unit that is primarily responsible for nurturing and upbringing.

In contrast to this definition, a family with only one parent would not fit the nuclear family model, as it lacks one of the two parents. A family that includes only grandparents does not encompass the parental role of raising children alongside the immediate family members. Lastly, a family with multiple marriages might suggest a blended or extended family structure but does not conform to the traditional nuclear family definition, which focuses on the married parents' relationship with their biological or adopted children. Therefore, the option that best describes a nuclear family is indeed the one that includes parents and their offspring.