Research on eusociality suggests that the evolutionary driving force(s) to preserve this form of sociality is/are?

Question

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Kin selection and inclusive fitness are the main evolutionary driving forces that preserve eusociality. Kin selection suggests that altruistic behavior towards close relatives increases the chance of shared genes being carried on to future generations. Inclusive fitness expands on this by recognizing the importance of indirect fitness benefits, such as aiding in the survival and reproduction of relatives. Therefore, eusociality is maintained through the promotion of genetic relatedness and the benefits of indirect fitness. Environmental adaptation can also play a role in determining which species become eusocial, but it is not the primary driving force for preserving eusociality.

Research on Eusociality Suggests That the Evolutionary Driving Force(s) to Preserve