There Was a Case of an 11-Year-Old Girl Who Was

Multiple Choice

There was a case of an 11-year-old girl who was suffering from a disease in which her own immune system attacked her body. To treat her, researchers first paired cod liver oil with an immune-suppressant drug. Later, when she only received pure cod liver oil
(without the drug) , her immune system still showed the intended impairment. In this instance, the conditioned stimulus would be the:

A) cod liver oil.
B) immune system impairment triggered by the cod liver oil.
C) immune-suppressant drug.
D) immune system impairment triggered by the drug.