Which definition fits a blended family?

A blended family is defined as a group formed from parents and children from previous marriages as well as from a current marriage. This definition captures the essence of what a blended family is: it acknowledges the presence of children from prior relationships integrated into a new family unit. Blended families are common in modern society, reflecting the diverse family structures that result from various life circumstances, including divorce and remarriage.

The other definitions presented do not accurately represent a blended family. The first option describes a traditional family unit consisting solely of biological parents and their children, which does not include children from previous relationships. The third option identifies a single-parent household that does not involve a blended dynamic, as it only consists of one biological parent and his or her child. Lastly, the fourth option refers to a family structure limited to just grandparents and grandchildren, which also fails to encompass the concept of a blended family, as it lacks the component of multiple parental figures and children from different familial backgrounds. Therefore, the definition that best aligns with a blended family is the one emphasizing the combination of children and parents from different marital histories.