According to the grandmother hypothesis,postreproductive longevity evolved to allow for grandmothers to contribute to the survival of grandchildren.

Question

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The grandmother hypothesis proposes that the evolution of postreproductive longevity in humans and some other species was driven by the benefits of having older females who could assist in childcare and contribute resources to their grandchildren, thereby increasing their chances of survival and reproductive success. This theory has been supported by various studies of human and animal populations that have shown that the presence of grandmothers can have a positive impact on infant and child survival rates and overall fitness.

According to the Grandmother Hypothesis,postreproductive Longevity Evolved to Allow for Grandmothers