Final answer:
Lactose persistence in humans has provided benefits such as access to a rich source of nutrition and increased survival and reproductive success.
Step-by-step explanation:
Lactose persistence in humans, or the ability to digest lactose, has provided several benefits. Firstly, it allowed early humans to consume milk as a source of nutrition, which is rich in calcium, proteins, and vitamin D. This was especially important during times of food scarcity. Secondly, the ability to digest milk may have provided an evolutionary advantage to individuals who could utilize this additional food source, leading to increased survival and reproductive success.