Final answer:
Female primates tend to form social bonds when they exercise their mating preferences and engage in cooperative behavior. Primate social groups are held together by female kinship and solidarity.
Step-by-step explanation:
Female primates tend to form social bonds with one another when they exercise their preference to mate with certain male friends rather than aggressive or dominant males. Friendliness with females may be a much better reproductive strategy for males, and cooperation rather than competition is recognized as the central feature of primate social life. Additionally, primate social groups are composed of related females, with males as temporary members who often move between groups. The glue that holds primate groups together is female kinship and solidarity.