What is a "nuclear family"?

A. A household made up of a father, mother, and their children

B. A household provided for by a manufacturing worker

C. A household with advanced appliances, gadgets, or automobiles

D. A household provide for by a white-collar worker.

A nuclear family is:

A. A household made up of a father, mother and their children.

A "nuclear family" is A, a household made up of a father, mother, and their children.

The term is often used when talking about traditional families vs diverse families (families that don't follow the "nuclear family" model. Ex: same-sex couples with adopted children).