Answer:
All of the Above
Step-by-step explanation:
All of the above are benefits of wildebeests migrating and staying together in big herds. By staying in groups, they increase their individual rates of survival against predators as there are more eyes to detect danger and more animals to dilute the risk of an individual being singled out by a predator. The group also provides a collective knowledge of where to migrate, find water and food sources. Additionally, the wildebeests can accomplish tasks such as crossing rivers, which would be difficult or dangerous to do alone. These benefits are examples of swarm intelligence, where a group of individuals collectively perform better than any individual alone.