Which of the following terms refers to something quite different than do the other three terms?

Question

Quizplus · Accepted Answer

Single-parent family refers to a family where only one parent is present to raise the children, whereas the other three terms refer to families that involve at least one stepparent. Blended family refers to a family where two separate families come together and combine when the parents marry. Stepfamily simply refers to a family where at least one stepparent is present, and reconstituted family refers to a family that has been reconfigured due to divorce and remarriage, often resulting in one or more stepparents.

Which of the Following Terms Refers to Something Quite Different