While Watching His Favorite Television Show at a Friend's House

Multiple Choice

While watching his favorite television show at a friend's house, Chiane is served nachos with jalapeno peppers. Chiane doesn't know that he has already contracted a stomach virus, and later that night, he begins vomiting violently. For several months after this, he cannot eat nachos or anything with jalapeno peppers. This is a demonstration of

A) a taste aversion.
B) the law of effect.
C) vicarious experience.
D) learned immune response.