According to the Intra-Organism Nature of Behavior, the Term "Group

According to the intra-organism nature of behavior, the term "group behavior" is misleading because:

A) there is not a strict definition of how many organisms are required to form a "group"
B) a group may perform multiple behaviors at the same time
C) group behavior may be very brief or occur in very small movements, and therefore go unnoticed
D) a group is not a biological organism and therefore cannot behave