Final answer:
The increased ability to see greater distances is an adaptation associated with bipedalism, which helped early hominins to spot predators or prey over tall grasses and better observe their environment.
Step-by-step explanation:
An increased ability to see greater distances is one of the adaptations to bipedalism. When our hominin ancestors started walking on two legs, they gained several advantages such as freeing up the hands to carry objects and possibly increasing energy efficiency. One of the notable adaptations was an enhanced ability to view objects over greater distances. By standing up, individuals could look out over tall grasses and spot potential predators or prey, which would have been beneficial for both hunting and avoiding danger. The change to a bipedal stance also allowed for greater observation and surveillance of the environment, which could have contributed to the survival and eventual dominance of bipedal species.