In Which Scenario Should Incentive Learning Occur

Multiple Choice

In which scenario should incentive learning occur?

A) A rat receives pairings of a tone with a light which has previously signaled a tasty meal.
B) A lab pigeon that has always been fed grain is given meal worms for the first time as the reinforcer for pecking a key.
C) Prior to training in an operant chamber, a hungry rat is given sweetened condensed milk for the first time in its home cage.
D) A pigeon must peck a green key to get grain, because the red key is associated with no grain.