Final answer:
Non-kin groups in foraging societies engage in resource sharing guided by inter-band relationships, with decisions made communally among those with relevant expertise and experience.
Step-by-step explanation:
Non-kin groups in foraging societies often consist of other bands with whom they may share resources, especially in times of scarcity. Hunter-gatherer societies are largely mobile and nomadic, moving across wide territories and sometimes meeting up with other groups at key resources like water sources and ripe vegetation areas. Decision-making within these societies typically occurs through discussion and consensus, taking into account the opinions of those with knowledge and experience in the matter at hand. This cooperative approach to resource management, along with social bonds through cross-band friendships and marriages, often leads to smooth negotiations for resource sharing between non-kin groups.