Which of the Following Is Not an Example of Operant

Multiple Choice

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

A) Flinching slightly when the nurse tells you that they are about to give you a shot
B) A baby smiling at its parent after having been picked up for smiling in the past
C) A rat pressing a lever that has produced food in the past
D) Pressing the keys on the joystick in a pattern that produces a "combo" on a video game