In Which Scenario Would Acquisition of a Classically Conditioned Response

Multiple Choice

In which scenario would acquisition of a classically conditioned response be MOST likely to occur?

A) Whenever Marco sneezes, his boyfriend is sure to say, "Bless you" and hand him a tissue.
B) Kayla always wears a vanilla-scented lotion, but one time when she wore it, she got a cold.
C) After Shannon receives a painful shot, she treats herself to ice cream and eats a new flavor.
D) Every time Thomas sees high-heeled shoes, they are being worn by an attractive woman.