Which of the following families includes children from previous relationships?

A blended family is characterized by the inclusion of children from previous relationships of one or both partners. In a blended family, two individuals come together to form a new family unit, which may involve marrying or cohabiting and can include children from those prior relationships. This setup requires navigating relationships among step-siblings and possibly integrating different parenting styles and family traditions.

The other family types mentioned do not fit this definition. An extended family usually consists of additional relatives beyond the immediate family, such as grandparents, aunts, uncles, and cousins, rather than children from previous relationships. A childless family is one in which the couple does not have children, either by choice or circumstances, and thus does not involve the dynamics of merging families. A foster family provides temporary care for children who are not their biological children, focusing on supporting children in need rather than merging families with existing children from prior relationships.