In the common bluegill sunfish, foraging in small groups increases success in finding food. They feed on small, aquatic insects that live in underwater vegetation and when bluegills forage together they are able to flush out many more insects. Which of the following is correct in this case of group foraging?A. The bluegill example illustrates one of the costs of group foraging. B. Bluegill foraging is a product of complex patterns of social rules.
C. The bluegill example illustrates a "passive" benefit of group foraging.
D. The bluegill example illustrates an "active" benefit of group living and communication.