Inferences

SAT Reading and Writing· difficulty 3/5

The naked mole-rat, a burrowing rodent native to East Africa, lives in colonies of dozens to hundreds of individuals organized around a single breeding queen. Most colony members are sterile workers who excavate tunnels, gather food, and defend the colony. This social structure resembles that of social insects such as bees and ants and is unusual among mammals.

Which conclusion most logically follows from the passage?

  • A

    Similar social structures can arise in distantly related groups of animals

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  • B

    Naked mole-rats and bees share a recent common ancestor

  • C

    All mammals exhibit eusocial colony structures

  • D

    Naked mole-rat colonies operate without any reproductive specialization

Explanation

A bee-like structure being unusual but present in a mammal supports B. A is unsupported; C contradicts "unusual"; D contradicts the breeding queen.

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