The family is a social institution. The importance of the family in an individuals life us

The family is a social institution. The importance of the family in an individuals life usually depends on the size of the society. In small, primitive (原始的，早期的) societies, the family is the dominant social institution in an individuals life. In larger, more complex societies, other social institutions are created to meet the needs of an individual. There are two basic family structures. The first structure is the extended family. The extended family includes all of an individuals blood relatives, including spouse, children, parents, brothers and sisters, grandparents, cousins, and aunts and uncles. The nuclear family is limited to the basic family nucleus: father, mother, and children. The extended family structure tends to exist in agricultural societies. In such societies family ties serve as a strong source of cultural and societal interaction. The nuclear family structure tends to exist in industrialized societies. In industrial societies, other social institutions (such as religion, education, and government) act as the primary sources of cultural and societal interaction.

Based on the information in the passage, it can be inferred that the extended family is most likely to be found in agricultural societies because______.

A．agricultural societies are larger than industrial societies

B．agricultural societies have fewer social institutions

C．agricultural societies are stronger than industrial societies

D．extended families are less complex than nuclear families

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