Based on Jenkins & Moore's Experiment on Autoshaping, the Fact

Multiple Choice

Based on Jenkins & Moore's experiment on autoshaping, the fact that pigeons peck a key differently when the reinforcer is food as opposed to water is most readily explained in terms of:

A) adjunctive processes.
B) the behavioral bliss point approach.
C) Pavlov's stimulus-substitution theory.
D) the response deprivation hypothesis.