BFSkinner Rigged the Cages of Eight Pigeons So That Food

Multiple Choice

B.F.Skinner rigged the cages of eight pigeons so that food was delivered every 15 seconds.Within a short time most of the pigeons were practicing some sort of consistent ritual,even though the ritual did not have the least effect on the delivery of the reinforcer.The birds were:

A) demonstrating spontaneous recovery.
B) developing phobias.
C) trained by vicarious learning.
D) behaving superstitiously.