Concept:
In social-cultural anthropology, family is the primary corporate social institution based on marriage, descent, and common residence.
Anthropologists classify families into nuclear, composite, extended, and joint families based on generational depth and kinship organization.
This question asks for the standard anthropological definition of a joint family.
Step 1: Differentiating Nuclear and Joint Families:
1. Nuclear Elementary Family (Statements A and C): Consists of a single married couple and their socially recognized dependent, unmarried children. It is also known as the primary or basic family.
2. Joint Family (Statement B): Formed by the union of two or more nuclear families bound by generational (lineal) or sibling (collateral) kin relations. Members typically share a common residence, a common cooking hearth, joint property ownership, and participate in common familial rituals.
Step 2: Structural Forms of Joint Families:
- Lineal Joint Family: Spans three or more generations living together (e.g., parents, their married sons, daughters-in-law, and grandchildren).
- Collateral Joint Family: Comprises two or more married brothers living together along with their respective spouses and children.
Step 3: Final Answer:
A joint family is best explained as a social unit consisting of two or more nuclear families.
Therefore, Option (B) is the correct answer.