Respuesta :
Answer:
B) Communication
Explanation:
Entertainment is not the correct one the weren't entertaining each other with a music concert, Social bonds is also not correct they weren't having buddy buddy time, and Adaptive function was not it so.... it HAS to be communication the key sentence is this... The group split into two smaller groups to cover more territory, and they used drum signals to tell the other group where they were. That is an example of communication!
Hope this helps! :)