Hyenas hunt in packs and prey on wildebeests. Sometimes, a lion will try to eat the wildebeest that a hyena is eating. A hyena is much smaller than a lion, and is not able to defend itself against a lion on its own. When a hyena is competing with a lion for the wildebeest, the hyena will make a loud, giggling sound. Other hyenas come to the area to help their pack member. How does the hyena's communication help it survive?
A. It tells other hyenas that they need to work as a pack to defend their food source.
B. It informs the pack that they need to hunt for a new food source.
C. It alerts the lion that the hyena does not want to fight for the food source.
D. It warns other pack members that they need to stay away from the food source.