Which of the Following Is Not an Example of Respondent

Multiple Choice

Which of the following is not an example of respondent conditioning:

A) A baby smiling at its parent after having been picked up for smiling in the past
B) Feeling anxious any time you hear the music from a scary movie
C) Flinching slightly when the nurse tells you that they are about to give you a shot
D) Feeling excited whenever you smell your significant other's cologne/perfume